Interspecies Conflict/VS

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Question
Hi again BK here are more animal conflicts I would like you too take a look at.

1.Lion vs Gorilla
2.Great White Shark vs Colossal Squid
3.Kodiak bear vs Walrus
4.Leopard vs Green Anaconda
5.Nile Crocodile vs Cape Buffalo
6.Lion vs Gaur
7.Black bear vs Jaguar
8.Killer Whale vs Elephant seal
9.T Rex vs African Elephant
10.Kodiak bear vs Wild boar
11.Black Rhino vs American Bison
12.Nile crocodile vs Gorilla
13.Moose vs Wildebeest
14.Cougar vs Snow Leopard
15.Lion vs Elephant Seal
16.Bengal Tiger vs Walrus
17.Wolverine vs Spotted Hyena
18.Polar bear vs Colossal squid
19.Nile Crocodile vs Green Anaconda
20.Wildebeest vs Cougar
21.Gray Wolf vs Honey badger
22.Black rhino vs Bengal Tiger
23.African Elephant vs White rhino
24.Cape Buffalo vs Jaguar
25.Leopard vs Zebra
26.Kodiak bear vs Gray Wolf pack
27.Cape Buffalo vs Black rhino
28.Jaguar vs Komodo Dragon
29.Sumatran Tiger vs Cougar
30.Kangaroo vs wildebeest
31.Grizzly bear vs Green Anaconda
32.Giraffe vs American bison
33.Kodiak bear vs Cape buffalo
34.Wolverine vs Wild boar
35.African Elephant vs Blue Whale
36.African Elephant vs Giraffe

Thank You

Answer
Hello Trish.


1. Lion vs Gorilla: A male African lion can weigh about 20% more than a gorilla.  A lion has all of the typical big cat attributes & abilities (speed, agility, athleticism, explosive action, killing know-how, etc.) and is armed with powerful jaws, sharp teeth, and sharp claws.  A male lion's primary responsibility is protection of the pride, and commonly battles other male lions for territory and females.  Although the lionesses do most of the hunting, the male will join in on occasion to help overpower large prey items.  A male gorilla is charged with the defense of his troop, and will fight to the death to protect it.  Gorillas are extremely strong primates with long, powerful arms that can span 8 1/2ft.  They can bite with a lot of force and have sharp upper canines.  Gorillas occasionally cross paths with leopards (which are usually 1/3 the weight of lions), and these cats have been known to predate on them (by ambush).  Gorillas don't have experience battling animals outside their own species (and encounters with other gorillas usually don't advance past bluffing), but their physical attributes make them capable adversaries.  They usually fight by pulling and biting, and the forceful motion of their arms during a struggle can potentially be impactive.  The gorilla will likely have more brute strength than the lion on a pound-for-pound basis (and perhaps an absolute basis), but the ape won't have an effective enough means of using that advantage before the lion mauls it or uses its speed and agility to get into a favorable position and sink in a finishing bite (throat or spine).  The lion will have a better idea of what it needs to do in this fight than the gorilla will, and will dominate this encounter.  Even a lioness will be heavily favored to defeat a gorilla in a face-to-face battle.  Lion wins.

2. Great White Shark vs Colossal Squid: A great white shark can weigh anywhere from 4 to 5 times as much as a colossal squid.  The great white shark is a fast swimmer that can make sudden movements in powerful bursts.  Its scale-covered skin serves as an armor of sorts, and its mobility in the water is good.  The most famous feature of the great white shark is its jaws, which are lined with many sharp teeth.  The bite of a great white shark is a truly devastating weapon, as it can remove large chunks of flesh with ease.  The colossal squid is slow-moving in general, but can ambush animals that come close by quickly seizing them in its long tentacles.  The shark will have advantages of mobility and speed, and its bite will be able to incapacitate the squid if the right area is targeted.  The squid's only chance is to wrap the shark up without receiving any major injuries, and holding the fish in place until it drowns.  Both can certainly win, but I think most scenarios will favor the heavier and more maneuverable shark.  Edge to great white shark.  

3. Kodiak bear vs Walrus: A bull walrus can weigh over twice as much as a Kodiak bear.  Walruses are rotund mammals with extremely tough hides and long tusks (some over 3' long each).  Kodiak bears are powerful mammals with great strength, endurance, durability, and weaponry (strong jaws & long claws).  A swipe from a bear's paw can have a profound impact on most targets, but an walrus is much larger than anything a Kodiak bear encounters.  Polar bears struggle to overpower walruses of similar size, and they have experience dealing with pinnipeds.  Kodiak bears don't.  A determined Kodiak bear will have the arsenal to compete with an equal-sized walrus if its weaponry is coupled with experience, but even then it will be bullied around on most occasions.  A full-grown bull walrus has little to worry about from a polar bear (on land or in water), and the same is true regarding the Kodiak bear.  The walrus won't be able to subdue the bear, but it will drive it away.  Walrus wins.

4. Leopard vs Green Anaconda: The green anaconda will weigh approximately twice as much as the leopard.  Leopards are very skilled hunters that take on large and sometimes dangerous prey animals from time-to-time.  Wildebeest, warthogs, and even zebra are targeted by the leopard.  This cat has a very muscular head and shoulder area, and its limbs are powerful as well.  The leopard's agility, quickness, athleticism, weaponry (jaws and claws), and finishing know-how are its chief assets in a confrontation with another animal.  The green anaconda is the heaviest snake in the world.  It is an ambush predator that can seize an unsuspecting animal in its jaws (filled with backward-pointing teeth) and wrap its mighty coils tightly around the victim to suffocate it.  The power in an anaconda's coils is sufficient enough to asphyxiate an animal close to double the snake's own weight, but smaller prey is commonly targeted.  The leopard is no stranger to dealing with constrictors (African rock python) and the green anaconda is no stranger to dealing with big cats (jaguar).  The green anaconda has limited mobility and stamina on land, and isn't a very good fighter when face-to-face with a mobile adversary.  In shallow water the anaconda will have greater mobility and speed, and its stamina will be improved as well.  The snake will have a sizeable strength advantage, and the leopard will be on the defensive soon after the battle begins.  A bite by the leopard on the spine or head of the anaconda can disable it and grant victory to the cat, but the anaconda will be in its element and have a much better chance to win.  Edge to leopard on land; edge to green anaconda in water.

5. Nile Crocodile vs Cape Buffalo: These animals can weigh close to the same, but the Nile crocodile can weigh 1/3 more on occasion.  The Nile crocodile sometimes attacks prey on land, but its specialty is ambushing prey at the river's edge.  The Nile crocodile's assets are tremendously strong jaws, armor-like hide, and great power in the water.  The Cape buffalo's assets are strength, thick curved horns, and sharp hooves.  The buffalo will have a large mobility and endurance advantage on land, but the crocodile will have enough maneuverability and stamina in the water to erase the herbivore's edges in those categories.  If the crocodile seizes the buffalo in its jaws on land, it won't be able to advance its position further (and will risk injury when the bovid begins to resist).  If the crocodile grabs the buffalo in the water, it will have a chance to pull the bovid under and possibly drown it.  The outcome of this battle will depend largely on venue; Cape buffalo has the edge on land and the Nile crocodile has the edge in the water.   

6. Lion vs Gaur: A bull gaur can weigh 4-6 times as much as a male African lion.  Male lions are great fighters against other lions and clans of spotted hyenas, and they are capable of killing large prey items like zebra, eland, and buffalo.  A lion's quickness, athleticism, agility, and killing know-how make it a danger to other carnivores and herbivores alike, and its teeth and claws are capable of inflicting serious damage to anything it attacks.  The gaur is the world's largest wild bovid.  This powerful, muscular beast can exceed one ton in weight (sometimes reaching 1.5t) and is capable of killing an attacking Bengal tiger with its stout horns and sharp hooves.  Although the lion is physically capable of applying an effective throat bite to a full-grown gaur, getting into that position during a face-to-face will be very difficult.  No modern big cat will have much of a chance against a gaur without the benefit of ambush, and even with an ambush won't be favored.  Gaur wins.

7. Black bear vs Jaguar: Jaguars, the 3rd largest cats in the world, average about 200lb in weight and can reach 300lb on occasion.  Some males in the Pantanal region of South America have reportedly reached 350lb.  The American black bear can exceed 500lb, with some large males approaching 600lb.  The smaller Asiatic black bear usually maxes out at 440lb.  Jaguars are widely considered to be the strongest big cat pound-for-pound, and their bite force is greater for their size than any other big cat.  Jaguars aren't as tall at the shoulder as cougars or leopards, but they are much stockier and more powerfully built.  Bears have greater endurance than big cats, and although they won't battle with the same intensity as a big cat will at the beginning of a fight, they can battle strongly for a greater length of time.  The jaguar will use its sharp claws to swipe and grip, and may attempt to land a killing bite on the bear with its large jaws.  The black bear will swipe with its paws as well, and may use its forelimbs in as attempt to control positioning while it lands bites.  Even the largest jaguar will have trouble against a full-sized American black bear because it will be giving up too much size and strength (check out my answer from "Interspecies conflict" from 1/25/14 regarding this matchup), but will have a decent chance against the Asiatic black bear (check out my answer from "None" on 11/2/13 regarding a jaguar vs an Asiatic black bear).  A jaguar will have the edge over any black bear close to its weight range mainly because it is more practiced at killing animals in its weight range than the black bear is, but a large weight advantage by the bear will make the fight closer.  Overall edge to black bear.  

8. Killer Whale vs Elephant seal: A killer whale (orca) can weigh over 50% more than a Southern elephant seal (and in some cases twice as much).  Killer whales hunt together like wolves to tackle large prey items, and they are highly intelligent strategists.  Their fins and horizontal tail fluke make it possible to maneuver very well and attain high speeds.  A killer whale's jaws are filled with many sharp teeth (some measuring 4" long), and these are used to hold and tear.  Elephant seals are good swimmers and have effective bites, but a killer whale will trump one in every category in a hostile confrontation.  The maneuverability will be comparable because the seal is smaller, but the strength and bite of the orca will be much greater.  A killer whale knows to attack a seal from the rear (will bite the tail flippers in an attempt to disable it), and is wary of the seal's bite.  A killer whale might avoid attacking an elephant seal without help, but is certainly equipped to defeat one in a serious battle.  Killer whale wins.

9. T Rex vs African Elephant: These animals are close in weight, but a Tyrannosaurus will typically weigh about 25% more.  African elephants are very strong animals armed with sharp tusks, and are largely impervious to attack when full-grown.  A bull African elephant has only large lion prides (and other bull elephants) that can present problems for it once it reaches adulthood.  The Tyrannosaurus was believed to be a fearsome hunter, and was armed with a huge skull (5ft long) with jaws lined with long teeth (over 6" long).  The bite force of the Tyrannosaurus was much greater than that of any modern crocodilian, and its stout, deep-rooted teeth were made to withstand the great pressure of biting violently into muscle and bone.  This huge theropod often dealt with large, well-armed herbivores (like Triceratops) that equaled or exceeded the African elephant in size, and was experienced in doing so.  Adult elephants don't deal with any predators close to their own size, and one would probably flee at the approach of a Tyrannosaurus.  The elephant could potentially injure (or drive away) the huge reptile, but its chances of actually overcoming it aren't good, and it will be vulnerable to a bite from any position.  The Tyrannosaurus would know how to deal with the elephant better than the elephant would know how to deal with it.  Edge to Tyrannosaurus.

10. Kodiak bear vs Wild boar:  A Kodiak bear can weigh almost 3 1/2 times as much as a giant forest hog and will measure almost 60% taller at the shoulder.  Kodiak bears, along with polar bears, are the largest of today's bears.  They don't typically target large animals to predate upon (they love fish), but are very capable combatants with their ursid attributes (strength, endurance, durability, forelimb usage, jaws & claws).  Wild boars have tough hides, sharp tusks, and good lateral quickness.  They are preyed upon by various predators in various locations, and are usually battle-tested as a result.  It will be important for the Kodiak bear to keep the giant forest hog from creating the distance needed to use its tusks, but the bear should have the strength to do this against this smaller animal.  The swipes of the bear will be effective, and positioning will be dictated by the ursid once it grabs onto the suid.  Wild boars are good matchups for many bears at close weights, but the bear is too big here.  Kodiak bear wins.

11. Black Rhino vs American Bison: The black rhino will weigh about 50% more than the American bison.  The black rhino has tough hide, a tank-like build, and a set of dangerous nose horns (with a longer one in front) that can be used to gore adversaries with.  Rhinos are extremely strong, and can make powerful charges and turns.  The American bison can weigh over a ton, and is one of the most impressive bovids in the animal kingdom.  It is stocky and solid, and usually fights by using its head as a battering ram or hooking with its curved horns.  The bison can deliver deadly kicks as well, and wolves sometimes avoid it because of this.  As impressive as an American bison is, it is trumped in too many combat categories (size, strength, toughness, weaponry) to have a chance against a black rhino.  Even the prehistoric Bison latifrons (basically a 2t bison with longer horns) would lose to a black rhinoceros.  Black rhino wins.

12. Nile crocodile vs Gorilla: A large Nile crocodile can weigh over 4 times as much as a large gorilla.  Nile crocodiles are covered in bony growths (osteoderms) that protect them from most attacks and huge jaws that can generate a tremendous bite force.  They kill by drowning, and their teeth clamp on tightly to their quarry making escape almost impossible.  The crocodile's tail can be used as a weapon as well, as it can be swung with a lot of power.  Gorillas are very strong primates with long arms, grabbing hands, and a decent bite of their own.  However, they don't have experience taking on animals of other species.  In a land battle a gorilla will have a solid mobility advantage and will have better endurance, but won't be able to apply any meaningful offense against the crocodile without putting itself in peril.  Once the gorilla gets close to the crocodile, the crocodile will have the ability to turn quickly to seize the ape in its jaws, and the gorilla will have few options from that point.  Even on land, the crocodile will be too well-equipped for a gorilla to deal with.  Realistically, a gorilla would not go anywhere near a large crocodile if they somehow come in contact with one another.  Nile crocodile wins.   

13. Moose vs Wildebeest: A moose can weigh over 2.5 times as much as a wildebeest.  A bull moose is very powerful and surprisingly agile for its size.  It can have a large set of antlers (flat and wide with points on the edges), and these can be used offensively and defensively.  A moose can also kick effectively with its sharp hooves.  A wildebeest has ox-like horns and hooves to defend itself with, and does so frequently as a common prey item on the African plains.  This antelope can be a tough opponent, but it doesn't have much a chance against a herbivore with comparable weaponry and a 1,000lb weight advantage.  Moose wins.

14. Cougar vs Snow Leopard: A cougar can weigh over 40% more than a snow leopard.  Cougars are extremely athletic cats with long legs and great leaping ability.  They are great hunters (masters of stealth), and can overpower large cervids by tackling them to the ground and finishing with a bite to the throat, snout, or back of the skull.  Snow leopards are capable hunters as well, and can overpower herbivores much larger than themselves.  Both cats have strong jaws, sharp teeth & claws, quickness & agility, and finishing know-how.  However, the cougar has a decent size advantage here, and that can be key in a matchup of 2 animals with similar abilities.  Cougars can be quite combative (sometimes defending den sites against bears & wolves), and will be favored against the smaller snow leopard.  Cougar wins.

15. Lion vs Elephant Seal: A Southern elephant seal can weigh over 14 times as much as a male African lion, and a Northern one can weigh 9 times as much.  Although lionesses do most of the hunting, a male lion occasionally joins in to help with larger prey (like Cape buffalo).  The male lion is a terrific fighter because it regularly defends its pride against intruding male lions.  Elephant seals are huge mammals that are primarily aquatic.  They can outweigh rhinos.  Male elephant seals battle one another on land by posturing up face-to-face and landing bites forcefully and violently.  A lion will have definite advantages in speed, mobility, agility, and athleticism, but the elephant seal will have huge advantages in size and strength.  The lion will be quick enough to eventually leap upon the elephant seal, but staying on top of the pinniped while it's actively resisting won't be easy, and the big cat will need to do a lot of biting and chewing to inflict any meaningful damage.  The girth of the elephant seal's neck and the thick blubber under its skin will make a "suffocating throat-bite" kill very problematic for the lion (especially with the Southern elephant seal).  The elephant seal's bite can certainly injure the lion and its weight could easily crush the cat, but the slower-moving seal won't be able to easily apply this offense against a smaller animal with such great agility and reaction speed.  A stalemate is the most likely result on land (a fatality will involve great persistence or carelessness from the lion), and any battle in shallow or deep water will favor the seal.

16. Bengal Tiger vs Walrus: A walrus can weigh over 6 1/2 times as much as a Bengal tiger.  Bengal tigers are superb hunters, are capable of bringing down animals as large as buffalo solo.  These striped cats are a fantastic blend of agility, quickness, and athleticism.  Walruses are formidable adversaries for polar bears, and their tough hides and long tusks are great assets in such battles.  A walrus isn't very mobile on land, and the more mobile tiger will be a difficult target for the pinniped's tusks or its crushing weight.  The tiger will be able to maneuver to the side of the walrus and leap upon it (similar to how it would attack a crocodile on land), but the thick blubber and very tough hide will make clawing and biting have minimal effect (even the huge polar bear takes a long time to breach the walrus' tough hide).  The walrus won't be able to throw the tiger off of it with ease (because of the tiger's sharp claws holding onto it), but it will attempt to do so, and the tiger's attempts to apply an effective throat or neck bite will probably be an exercise in futility.  The tiger's sharp teeth can cause problems for the walrus if the cat's jaws clamp onto the right place (close to the head), but the tiger will probably tire and lose interest once it discovers it can't easily overcome the much larger mammal.  A Bengal tiger can certainly pull this off, but it will likely struggle to maintain its determination once its endurance starts to wane.  Each animal will have a small chance to overcome the other, but a stalemate is probably the most likely result.  It's hard to bet against the tiger based on its ability to play "keep away" and easily get into a good position on the walrus' back, but the walrus isn't built or shaped like any animal a tiger typically attacks.  A tiger with the same killing technique of a jaguar (biting through the skull) would likely be favored, but the tiger might not know this is what it needs to do with this particular opponent.  Difficult matchup to assess, but I'd give the slight edge to the walrus.

17. Wolverine vs Spotted Hyena: A female spotted hyena can weigh over 3 1/2 times as much as a wolverine.  Wolverines are often touted as the strongest mammal pound-for-pound, and their ferocity and boldness is well-known.  These mustelids occasionally drive wolves and bears away from kill sites and kill large herbivores encumbered by snow.  The wolverine's bite is strong enough to crush bone, and its sharp claws (which are great for digging) can cause serious wounds to anything it attacks.  Its thick fur offers some protection, and its supple body enables it to attack and fight from multiple positions.  The spotted hyena is a large African carnivore that is famous for its durability and extremely high bite force.  Clans of spotted hyenas occasionally rumble with lion prides, and single ones sometimes battle leopards or even chase them away.  The hyena won't be as confident on its own against a wolverine as it would be with the help of its clan, and one possible outcome will be the smaller animal driving the larger one away with an aggressive assault.  In a serious battle, however, the spotted hyena will be too big.  Any animal that can routinely hold its own against a leopard probably won't lose to a wolverine.  Spotted hyena wins.  

18. Polar bear vs Colossal squid: A polar bear can weigh almost 50% more than a colossal squid, but their weights may be close on occasion.  A polar bear is an immensely strong mammal with a strong bite and powerful limbs.  Adapted for swimming, the polar bear is longer and more slender than a similarly-sized brown bear (and has a longer neck).  Its claws are about 2" long, but they are curved and sharp to enable the bear to grip ice and pull animals out of the water.  Not a great deal is known about the colossal squid.  Its most noticeable features are its many tentacles and 2 long arms (adorned with suckers and hooks).  The squid is slow-moving in general, but can ambush animals that come close by quickly seizing them in its tentacles.  Even though the colossal squid and the polar bear both swim in cold regions of the earth, they never cross paths.  A polar bear will obviously have an unfair advantage on land or shallow water, but once the water depth gets great enough to allow full movement from the squid, the cephalopod will have the advantage.  The power a polar bear can apply with a paw swipe or exert in a grappling encounter won't be possible if the bear can't use solid ground to base itself, and the mammal won't have a way to defend itself consistently against a large squid attempting to wrap it up in its tentacles.  The polar bear will have a small window of time to grab and bite a vital area before its own movements are arrested, and drowning will be a real possibility if it can't free itself.  Overall edge to colossal squid.  

19. Nile Crocodile vs Green Anaconda: A large Nile crocodile can weigh up to 5 times as much as a green anaconda, but their lengths may be similar on occasion.  Most Nile crocodiles weigh between 500-1000lb, but a very large one can weigh a ton.  Nile crocodiles have incredibly strong jaws and armored hides (covered with bony growths called osteoderms), and these 2 assets make them formidable adversaries.  A large green anaconda can weigh over 400lb.  Anacondas are excellent ambush predators, but are poor fighters when face-to-face with another large animal.  The anaconda has a muscular body that can apply a great deal of force by squeezing.  Although the Nile crocodile might not be able to dislodge a green anaconda that's wrapped around it, it will likely be too large to be asphyxiated, and a stalemate may occur.  The Nile crocodile's massive bite can damage the skull or spinal column of the snake, so it has a much better chance to achieve victory than the snake does.  A Nile crocodile vs the prehistoric Titanoboa would be a close battle.  Nile crocodile wins.

20. Wildebeest vs Cougar: A wildebeest can weigh over 2 1/2 times as much as a large cougar.  Wildebeests are swift antelopes with curved horns and sharp hooves.  They are often attacked by lions, and a large wildebeest can occasionally defend itself successfully against an attacking lioness (which is approximately double a cougar's weight on average).  A cougar is an extremely athletic cat with long, powerful legs (which make it a great leaper).  It can kill herbivores much larger than itself, and many of these herbivores (like elk) are larger than the wildebeest.  That being said, ambush is an easier proposition than a face-to-face encounter.  In a realistic encounter with no ambush, the wildebeest will probably drive the cougar away more times than not (which can, depending on how you judge a fight, grant victory in this matchup to the antelope).  However, if the cougar is determined to find an opening in the wildebeest's defenses and remains persistent, I think it will eventually defeat the larger animal more times than not.  If we use a determined cougar, I give it the slight edge overall.

21. Gray Wolf vs Honey badger: The gray wolf will weigh almost 4 times as much as the honey badger.  Gray wolves typically hunt and fight in packs, but a single one can be a tough adversary due to its big bite, solid endurance, and great lateral quickness.  A honey badger is a very bold, aggressive animal that rarely backs down from a confrontation.  It has sharp claws (great for digging) and a strong bite.  The honey badger's skin is extremely tough, and this protects it from many assaults (including the stings of angry bees).  A honey badger may be able to drive a gray wolf away in a realistic encounter, but a determined wolf can be trouble for the mustelid.  The wolf will be able to land its bite multiple times while nimbly dodging the honey badger's counter-attack, and a good grip by the wolf's jaws (even if the teeth don't penetrate) can limit the smaller animal's movements.  The gray wolf has a better chance to kill the honey badger than the other way around (even though a kill will take a long time), and the biggest reason is the wolf's better lateral quickness.  If we use a determined gray wolf, it will have the edge.

22. Black rhino vs Bengal Tiger: A black rhinoceros can weigh about 5 times as much as a Bengal tiger.  The black rhino has tough hide, a tank-like build, and a set of dangerous nose horns (with a longer one in front) that can be used to gore adversaries with.  Rhinos are extremely strong, can make powerful charges and turns, and are considered to be the most aggressive type of rhino.  The Bengal tiger is a powerful cat with great quickness, agility, and athleticism.  It is armed with large, pointed teeth and sharp claws.  The Bengal tiger is a superb hunter, and can successfully ambush large animals (like gaur and water buffalo).  There are reports (many of them unsubstantiated) of Bengal tigers overcoming Asian elephants and Indian rhinos, but this isn't a typical or probable occurrence if the elephants and rhinos are full-grown, healthy specimens.  A full-grown healthy black rhinoceros is largely immune from predation (only a very large lion pride, a very large spotted hyena clan, or a large group of cooperating Nile crocodiles could realistically pull off a kill), and no single land predator on any continent would have a real chance to defeat one in a face-to-face battle.  It realistic to say a Bengal tiger might be able to successfully ambush a one-ton gaur, but a black rhino is on a different level than any bovid on the planet.  The land predator that has the best chance to defeat a black rhino in a face-to face battle is probably the Bengal tiger, but it certainly won't be favored to do so.  Black rhinoceros wins.

23. African Elephant vs White rhino:  An African elephant can weigh at least 50% more than a maximum-sized white rhino, and will measure about 75% taller at the shoulder.  The white rhino is a very strong animal with a tank-like build and very tough skin.  The longer of its 2 nose horns can be a devastating weapon (possibly the best weapon among land animals), and its ability to charge or thrust with great force makes it a formidable opponent.  As powerful as a white rhino is, the one land animal that can trump it is the elephant.  An elephant's size and strength will exceed the rhino's, and it can injure the smaller animal by forcefully using its weight or stabbing with its long tusks.  The more aggressive elephant will be able to drive the white rhino away with little resistance in most situations.  The white rhino will be slightly favored at parity due to having tougher hide and a more combat-effective weapon, but at typical sizes the elephant will be too big and strong.  African elephant wins.

24. Cape Buffalo vs Jaguar: A Cape buffalo will weigh 5 times as much as a jaguar.  Cape buffalo are stocky, ill-tempered bovids with thick horns and sharp hooves.  They are dangerous prey items for a lion pride (it usually takes multiple lions to bring one down), and have killed attacking lions on occasion.  Jaguars are powerful felids with short limbs and huge heads.  Their jaws are very powerful (can crush skulls), and they are considered to be the strongest big cat pound-for-pound.  A jaguar can kill caiman, anacondas, tapirs, and peccaries, but don't have experience tackling wild buffalo.  A single lioness (which is 1/3 larger than a jaguar and experienced at dealing with buffalo) can't consistently overpower a Cape buffalo without help from other pride members, and it's unlike a jaguar will fare any better.  Cape buffalo wins.

25. Leopard vs Zebra: A large zebra can weigh 4 to 5 times as much as a leopard.  A leopard is one of the strongest cats pound-for-pound, and demonstrates this strength by dragging large prey items high into trees (to keep the kill safe from lions & hyenas).  Its head is large, and its neck and shoulder muscles are rather pronounced.  A zebra is a common prey target for lions, and a single lioness (twice the weight of a leopard) can sometimes struggle with one.  A zebra will kick with its back hooves to defend itself, and will readily bite as well.  A leopard will have the speed and agility to avoid a zebra's kicks, but will have a hard time pulling this strong equid to the ground.  A leopard can leap toward the zebra's neck in an attempt to acquire a good "throat-bite position", but may have trouble hanging on.  The stamina of the zebra will be greater than the leopard's, and the cat will have a small window of time in which to make the kill.  I give a leopard a decent chance against a zebra up to 3 times its own weight, but not against one 4 or 5 times its own weight.  Edge to zebra.  

26. Kodiak bear vs Gray Wolf pack: A Kodiak bear will weigh over 11 times as much as a gray wolf.  Kodiak bears are very strong, durable, and have great endurance.  They can bite, use their forepaws to control positioning, and swipe with their long claws.  A large male wolf can exceed 130lbs, but each member of the pack won't be this large.  An average full-grown male gray wolf can weigh between 100-110lb (in some areas much less), so a wolf pack with 6 adults won't mean that there are 6 wolves each weighing 130lb.  Gray wolves are great at teamwork, and they can surround a large animal and attack from various sides to divide the target's focus.  A Kodiak bear can easily kill a wolf with a single swipe, but the lateral quickness of a wolf gives it the ability to stay out of range on most occasions.  The Kodiak will be hard to injure, and because both parties will have great endurance, an encounter might take a long time.  A typical gray wolf pack contains about 10 members (usually an alpha male and female that lead the pack, 3 or 4 other subadults (including a beta male), and around 4 or 5 pups.  This won't be enough to defeat a Kodiak bear, but the bear won't have the lateral quickness to easily catch any of the adult wolves in the battle.  The amount of adult gray wolves needed to even the odds with a 1,500lb Kodiak bear is probably at least 7 or 8, and an average wolf pack won't have that.  Edge to Kodiak bear.

27. Cape Buffalo vs Black rhino: A black rhino can weigh twice as much as a Cape buffalo.  Cape buffalos are ornery and aggressive, and are dangerous prey items for lion prides, but a single one would be overpowered by a black rhino.  Even at parity, a rhino is on a higher level (in regards to combat) than any bovid, and here the rhino is twice as heavy.  The black rhino has much greater strength, a stockier build, tougher hide, and a horn (the longer one in front) positioned better to be used effectively in a fight.  Even the prehistoric Pelorovis antiquus (an animal resembling a 2-ton Cape buffalo) would lose to a black rhinoceros.  Black rhinoceros wins.

28. Jaguar vs Komodo Dragon:  The jaguar will weigh anywhere from 50% more to double the Komodo dragon's weight.  Jaguars are the strongest big cats pound-for-pound, and their jaws are incredibly strong (can bite through caiman hide, turtle shells, and armadillo shells).  Jaguars typically kill prey by biting through the skull or spine, but will apply a killing throat bite on occasion as well.  The Komodo dragon is the world's largest lizard, some measuring over 10ft in length.  They have armor-like hides (many small osteoderms), huge claws, a whip-like tail, and a set of very sharp teeth.  It was once believed that the Komodo dragon's bite was effective in killing its prey based solely on the presence of deadly bacteria, but it is now known that this bite can produce a toxin that can induce shock and prevent the blood from clotting.  Komodo dragons aren't the best offensive fighters, but can defend themselves capably if they need to (like all large monitor lizards can).  A jaguar is an experienced reptile killer (caimans and anacondas), and will have a decent mobility and speed advantage over the Komodo dragon.  It will be able to get into position on the back of the reptile, cling to it, and land a skull bite to incapacitate it.  As long as the jaguar doesn't receive a bite (which will eventually kill it and can potentially begin to affect the cat immediately), it should prevail most of the time.  Jaguar wins.

29. Sumatran Tiger vs Cougar: The Sumatran tiger will weigh about 40% more than the cougar.  Both of these cats have similar assets and attributes (speed, agility, athleticism, killing know-how, jaws and claws, explosive power, etc.), but the size advantage the Sumatran tiger has over the cougar will be too much for the smaller cat to overcome.  Both animals can take large prey (the tiger can kill deer, pigs, and tapirs; the cougar can kill elk and other cervids).  The cougar has a more slender build than the Sumatran tiger, and its head is smaller in comparison to its own body.  In the comparison of abilities that matter in a close-quarters fight (bite size and strength, positional dominance, swipe power, claw size), the Sumatran tiger will have a decent advantage across the board.  The extinct Bali tiger would be a good matchup for a cougar, but the Sumatran tiger is simply too large.  Sumatran tiger wins.

30. Kangaroo vs wildebeest: A wildebeest can weigh 3 times as much as the red kangaroo (the largest kangaroo).  Kangaroos have the ability to kick forward with a great deal of power, and the claws on their large feet can easily wound an attacker in front of it.  Kangaroos defend themselves from dingoes and occasionally scrap with one another, but wildebeests have to contend with lions, hyenas, leopards, and African hunting dogs.  A wildebeest can kick with hooves or stab with the horns on its head.  The wildebeest will be more mobile than the kangaroo, and the marsupial won't have an effective way to block the sharp horns of the antelope.  The size and strength advantage of the wildebeest will help it as well.  A parity fight would be interesting, but the wildebeest is too heavy at these weights.  Wildebeest wins.

31. Grizzly bear vs Green Anaconda: The grizzly bear can weigh 2 1/2 times as much as a green anaconda.  Grizzly bears are among the most aggressive of bears, and rarely back down from a conflict.  They have a huge shoulder hump of muscle that enables them to easily dig up tough earth, and gives them great power when swiping with their forelimbs.  Grizzly bears have claws on each paw that can exceed 4" in length, and these can be mighty weapons.   Anacondas are excellent ambush predators, but are poor fighters when face-to-face with another large animal.  It's unlikely an anaconda will have the power to subdue an animal the size of a grizzly bear (unless, perhaps, the neck is coiled), and it's unlike the bear will let the snake get into a favorable position before mauling it with its claws.  Many large animals ambushed by an anaconda don't have an effective means to remove the coils once they start wrapping around, but a grizzly bear does.  It is flexible enough to use its claws and bite regardless of where the anaconda tries to latch on, and the bear's endurance will be superior.  Even in shallow water the anaconda won't be favored due to the grizzly bear's size and the mammal's ability to inflict quick injuries to the snake (even though its mobility will be better in the water).  Grizzly bear wins.

32. Giraffe vs American bison: A large bull giraffe can weigh twice as much as an American bison.  A giraffe can stand over 2 1/2 times as tall as a bison.  A giraffe is usually docile, but will kick strongly with its legs to defend itself from predatory attacks.  When 2 giraffes fight each other, they slam their necks into one another (sometimes causing injury with their ossicones).  The American bison is the largest land animal in the Americas, and its weight can exceed 2,200lb.  It has a very robust neck and shoulder area.  The bison's horns extend from the sides of the head and curve upward, and are thick and sharp.  This herbivore fights by charging forward like a battering ram, but will also hook with its horns.  Even though a giraffe is heavier and taller than a bison, it would probably give way to the smaller (but more assertive) herbivore in a realistic situation involving dominance.  It's unknown if the giraffe would use its neck in a fight with another type of herbivore, but it's probably unlikely.  In a serious battle the giraffe would probably defeat an American bison (the giraffe's kicks would be more effective than the bison's charges at these sizes), but realistically the bison would drive the giraffe away (and easily win a fight at parity).  Overall edge to giraffe, but it's conditional.

33. Kodiak bear vs Cape buffalo: These animals are typically close in top weights, but a massive Cape buffalo may get as much as 1/3 heavier on rare occasions.  Kodiak bears are strong, durable, and well-armed (jaws & paws), but aren't accustomed to dealing with large, mobile adversaries.  Bears are typically excellent fighters, though.  Cape buffalo fend off lions on a regular basis, and their thick horns and sharp hooves can be dangerous weapons.  The bear won't have the lateral quickness to avoid a charge or thrust by the buffalo with any consistency, and will likely be driven away in any realistic situation.  The Kodiak bear will have a decent chance in a serious battle if the weights are close (slight edge at parity), but a Cape buffalo weighing 1/3 more will have the edge.  

34. Wolverine vs Wild boar: A wild boar can weigh 10 times as much as a wolverine.  Wolverines are among as the strongest mammals pound-for-pound, and their ferocity and boldness is well-known.  These mustelids occasionally drive wolves and bears away from kill sites and kill large herbivores encumbered by snow (its wide paws make it easy to travel across snow).  It can run swiftly and climb trees well.  The wolverine's bite is strong enough to crush bone, and its sharp claws (which are great for digging) can cause serious wounds to anything it attacks.  Its thick fur offers some protection (the outer layer has hair up to 4" long and the thick inner layer is a barrier from the cold), and its supple body enables it to attack and fight from multiple positions.  A wild boar is a battle-tested animal (it's a common prey item across the world and males often fight one another) with tough hide and sharp tusks.  It has good lateral quickness, so it can charge and turn quickly.  A wild boar slowed down by deep snow might be vulnerable to a wolverine, but on solid ground the boar will be too large and dangerous for the mustelid to take on.  A wolverine might have a decent chance against a smaller pig-like animal like a collared peccary, but not a 440lb wild boar.  Wild boar wins.

35. African Elephant vs Blue Whale: A blue whale can weigh 25-30 times as much as an African elephant, but the difference in weight won't be as much of a factor here as venue.  A battle on land won't be fair to the blue whale because it will be stranded, and the elephant would be able to annoy it by poking it with its tusks.  A large blue whale measures about 15ft from its belly to its back, so putting it in water just deep enough to support it would make it too deep for the elephant (the elephant, which usually measures around 11ft at the shoulder, won't be able to touch the bottom).  There's really no place to have a fair battle between these 2 animals, so I can't assign a winner.

36. African Elephant vs Giraffe: An African elephant can weigh over 3 times as much as a very large bull giraffe.  The elephant is an extremely strong animal that can push and lift with a great deal of force.  It has a huge head (that can weigh 1,000lb by itself), a powerful trunk, and a set of sharp tusks that can be used to gore adversaries with.  Elephants can be rather aggressive at times, and have killed rhinos on occasion.  Giraffes are generally peaceful and non-confrontational.  They can deliver very powerful kicks (especially with the back legs) to defend themselves and their young against predators (including lions and hyenas), but prefer to run if they can.  An elephant can easily topple a giraffe with a charge, and a giraffe won't be able to reach a vital area on the elephant with an accurate kick.  No land animal will be favored against an African elephant one-on-one.  If an African elephant moves toward a giraffe, the giraffe will simply move away.  African elephant wins.


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Interspecies Conflict

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Questions regarding animal conflicts within realistic or unrealistic settings are welcome; my strength lies in medium-to-large species. Small animals (including birds of prey), prehistoric animals, sea creatures, and domestic dog breeds are usually within my scope, but to a lesser degree. I can't confidently answer hypothetical questions about human vs animal, arachnids, insects, or amphibians, but I am willing to field them nonetheless.

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From a young age, I have been interested in animals. Starting with the original Mutual of Omaha's Wild Kingdom and World Book Encyclopedias, I have seen many animal shows and documentaries and have read multiple books on the subject. I have a solid understanding of the physiology of many animals and interspecies conflict in general.

Education/Credentials
Associate degree in unrelated field; biology classes in college.

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