Interspecies Conflict/It's time.
QUESTION: Can you compare the agility and weaponry of deinonychus and the cougar? And who would win in a fight?
American alligator vs giant squid
American alligator v leopard seal at parity
Wolverine vs golden eagle
Wolverine vs binturong
Lion vs ceratosaurus at parity
Mandrill vs cassowary
Sun bear vs wolf
Smilodon fatalis vs marsupial lion at parity
Smilodon gracilis vs deinonychus
Harpy eagle vs game bred pitbull
Saltwater crocodile vs sawfish at parity
Tiger vs kelenken
Kelenken vs utahraptor at parity
Colossal squid vs walrus
Muskox vs rodeo bull at parity
ANSWER: Hello Johnny.
Q: Can you compare the agility and weaponry of Deinonychus and the cougar? And who would win in a fight?
A: Cougars have athletic, muscular, & supple bodies that enable them to make quick, agile motions explosively (thanks in part to fast-twitch muscle fibers). Their sharp claws are great tools for slashing & gripping, and their jaws & teeth are well suited for effective biting. The cougar's finishing know-how (knowing where to bite & how to get into position to do so) is a huge asset, and it gives all big cats a sizeable advantage in many conflicts. The Deinonychus is quick & agile as well (and can use its tail for balance), but it isn't able to make all of the same explosive movements as the cougar due to being bipedal & not having the amazing flexible spine of the felid. Deinonychus does have a variety of weapons (decent bite, grabbing forelimbs, & slashing claws to kick with), and can leap upon victims to attach itself to them. The cougar would win a fight with Deinonychus on most occasions (see below).
Deinonychus vs Cougar: The cougar will weigh close to 40% more than Deinonychus. Both have impressive weaponry (see above), but the cougar's agility should enable it to avoid the kicks of Deinonychus, leap upon it to pull it down, and get into a favorable position to finish with a throat or neck bite. It will be hard for Deinonychus to counter-attack once the cougar attaches itself to it (but not impossible), and it won't likely get up after being brought to the ground by the larger cat. The cougar will need to be cautious & assertive to avoid serious injury. Cougar wins.
American alligator vs Giant squid: The giant squid will weigh a little more than half the alligator's weight, but can attain a much greater length. The alligator has massively strong jaws that can close upon prey items with tremendous force. The bite in itself is not the primary killing mechanism (drowning is), but it still has the potential to cause serious (even fatal) injuries if clamped onto the right area. The alligator is also covered in osteoderms (bony growths) that give it an armor-like hide to protect it from many attacks. The giant squid has long tentacles lined with suckers that can wrap around an opponent to hold it in place, and a sharp, hard beak that can bite through most tissue with relative ease. The alligator will likely have a decent mobility advantage (and will be able to land the initial bite on most occasions), but the giant squid can move quickly in a short burst of speed to ensnare a potential victim. If the alligator can bite the giant squid on its mantle (which contains many vital parts of the it's anatomy), it can crush it and likely dispatch the cephalopod. If this initial bite doesn't find its mark (which is possible), the squid will immediately wrap the alligator up in its tentacles (which will effectively immobilize it) and drown it. Unless this battle occurs in shallow water (which would limit the squid's mobility), the alligator will have a difficult time succeeding. Giant squid wins.
American alligator vs Leopard seal (at parity): The alligator will have a couple of advantages over the leopard seal (bigger bite/armored hide), but will be a lot less maneuverable than the agile pinniped. Leopard seals have decent bites & large teeth, but many bites will be needed to wear the alligator down. The alligator's bite won't necessarily dispatch the leopard seal with one chomp (because of its robust build), but the bigger issue will be the difficulty the reptile will face trying to catch the quicker mammal. The alligator can make quick lunges (propelled by its powerful tail), but its jaws will need to latch onto the skull or a flipper to have great effect. The seal will be too agile on most occasions to be caught, and even though it will take an accumulation of bites, the leopard seal should eventually wear the alligator down on most occasions. Edge to leopard seal.
Wolverine vs Golden eagle: The wolverine will weigh 3 times as much as the golden eagle. It's hard to make this a fair fight (raptor vs land animal) due to the ways it can occur. The eagle could ambush the wolverine, the eagle could attack the wolverine with the wolverine being aware of its presence, or the fight could start with the bird on the ground (which would not end well for it). Wolverines have thick fur & durable hides, and an eagle's talon strike would need to be precise for it to overcome the mammal. An ambush would give the golden eagle a small chance to target the head or the spine, but there's no guarantee the wolverine would be overpowered by this every time. Any strike by the golden eagle that didn't land perfectly would result in the wolverine turning the tables immediately and mauling the comparatively fragile bird. The chances of the eagle succeeding (regardless of attack method) aren't very good. Wolverine wins.
Wolverine vs Binturong: The wolverine will weigh about 35% more than the binturong. Both animals have similar weaponry (jaws & claws), but the wolverine is more powerful & robust. Wolverines compete & battle with animals larger than the ones that compete & battle with the binturong, and their prey menu consists of larger items. A binturong will put up a fierce fight, but it will ultimately be defeated by the larger mammal. Wolverine wins.
Lion vs Ceratosaurus (at parity): Lions have the typical big cat assets (quickness, agility, finishing know-how, jaws & claws), and are well-practiced fighters. A Ceratosaurus has large, powerful jaws, but it will struggle to land a meaningful bite against the more mobile lion. The lion will use its quickness & explosive leaping ability to topple the Ceratosaurus, and hold it down while it obtains a good position to land a finishing bite. Lions have the strength to pull down large animals solo (zebra, buffalo, etc.), and a theropod at equal weights won't be beyond their capabilities. Lion wins.
Mandrill vs Cassowary: The cassowary will weigh over 50% more than the mandrill. Mandrills have sharp, upper canines that can cause serious injury to the cassowary, but getting close enough to use them will be a problem. Although mandrills have good mobility & leaping ability, they aren't experienced at dealing with cassowaries. It is physically capable of leaping upon the cassowary, grabbing it with its hands, and delivering a bite to its neck or other vulnerable area. However, what it is physically capable of doing & what it will actually do are probably 2 different things. The mandrill will likely attack without regard to the fearsome claws of the cassowary, and will get slashed by the bird's kicks. A mandrill would have a decent chance if the weights were a bit closer, but it won't be favored against a bird this much bigger. Edge to cassowary.
Sun bear vs Wolf: A sun bear weighs over 10% more than a grey wolf. The sun bear is a stronger animal, and is armed with claws as well as jaws (while the wolf only has jaws). A wolf is more nimble than the sun bear, but it won't have enough of a mobility advantage to avoid the swipes of the bear when it moves in to attack. Both animals have great endurance. The sun bear will have the ability to injure the wolf quite easily, and the wolf will find it difficult to land any meaningful bites. Sun bear wins.
Smilodon fatalis vs Marsupial lion (at parity): These animals shared common traits (muscular builds, decent agility & forepaw usage, jaws & claws) and were formidable predators. Both had the ability to make the quick kill. Smilodon had the huge upper canines used to impale the neck area of a victim, and the Marsupial lion had an extremely strong bite force and specialized teeth for crushing & slicing. Smilodon's method of dispatching an opponent required more effort & strategy than the Marsupial lion's, and this would be one key factor in a battle between the 2. Reasonably close fight, but edge goes to the Marsupial lion.
Smilodon gracilis vs Deinonychus: Smilodon gracilis was almost 40% heavier than Deinonychus. Smilodons were armed with very long upper canine teeth used primarily to impale the softer areas of a victim's neck to induce bleeding. The forelimbs of Smilodon were used to control the positioning of a conflict, and help bring the animal to the ground or hold it in place to be stabbed by its long teeth. Deinonychus would have presented problems for Smilodon because of its diversified weaponry (jaws, grabbing front claws, kicking lower claws). Smilodon gracilis has the bulk to tackle Deinonychus to the ground, but will need to be wary of the deadly kicks delivered by the theropod. A well-placed kick could swing the contest into Deinonychus' favor, but the Smilodon will be too agile to let this happen on most occasions. Smilodon gracilis wins.
Harpy eagle vs Game-bred pitbull: The American Pit Bull Terrier will weigh over 3 times as much as the harpy eagle. Harpy eagles are among the most formidable of all birds of prey, but much like the wolverine/golden eagle fight, it will need an ambush to have a chance to dispatch the powerful APBT. Any failed initial strike will leave the harpy eagle in peril from a counter-attack, and the raptor won't be able to withstand an assault by the mighty jaws of the canid. Birds are superb hunters, but are average fighters against many terrestrial animals. Game-bred APBT wins.
Saltwater crocodile vs Sawfish at (parity): Crocodiles have strong, vice-like jaws adapted to seize unlucky animals at the water's edge & pull them in to drown. The effect won't be quite as profound against an aquatic animal like the sawfish (which the crocodile can't really drown). The sawfish is armed with a rostrum (snout) that looks like a chainsaw blade, and it uses this to slash mightily back & forth to attack fish (as prey) and to repel adversaries (like sharks). The sawfish will have an advantage in mobility over the crocodile, and will be able to use its weapon (which will give it a reach advantage) effectively before the reptile's jaws get too close. The armored hide of the crocodile will give it some protection, but the impact of the rostrum against its less-protected head or sides can dispatch the reptile after a few blows. The crocodile has the ability to win with a chomp & spin approach, but it won't likely get the opportunity to pull this off before getting struck by the sawfish. Sawfish wins.
Tiger vs Kelenken: The species of tiger used will make a difference in how quickly this battle ends. Kelenken was almost as tall as a modern-day ostrich (but about 50% heavier). Kelenken was a "terror bird" that likely used its huge beak to savagely bite opponents (or as a hammer to smash with). Siberian & Bengal tigers will have a weight advantage over the Kelenken, and will be able to use their agility & quickness to avoid the terror bird's offense and leap upon it to subdue it. The Sumatran tiger, which weighs about 2/3rds of the Kelenken's weight, would be a good match for it. The Kelenken would have the power to injure the smaller tiger with a kick, bite, or beak strike, but the cat would still have an ace-in-the-hole with its leaping ability. The tiger will be able to spring upon the bird and either pull it down or move into a position (with its forepaws & claws) to deliver a finishing neck bite. The tiger can't be tentative if it hopes to be successful here. Any second-guessing by the Sumatran tiger could spell trouble for it, but a determined & focused one should have the edge. Tiger wins.
Kelenken vs Utahraptor (at parity): Both of these animals had diversified weaponry. The Kelenken had a huge head & beak (possibly to deliver strong bites or downward strikes), and strong legs for kicking. Utahraptor had jaws with teeth (for biting & tearing), front claws for grabbing, and sharp, curved claws to kick & slash with. Utharaptor was a larger version of the Velociraptor & Deinonychus, and probably had the ability to easily leap upon victims to attack them from close range. Utahraptor would have been able to do this to the Kelenken on most occasions, and the terror bird wouldn't have been able to fend off the deadly kicks from the theropod once it grabbed a hold of it. The Kelenken would need a decent size advantage over Utahraptor to compete with it. Utahraptor wins.
Colossal squid vs Walrus: A bull walrus can weigh 4 times as much as a colossal squid. The walrus is a very rotund mammal with thick, tough hide & tusks close to a meter long. The walrus can kill a colossal squid with a well-placed stab (in the mantle), and has the mobility to pull this off. However, the typically sluggish colossal squid is an ambush predator capable of making short, quick movements to ensnare animals that get too close (with its tentacles). If the walrus' first strike is not successful, the colossal squid will likely wrap it up with its tentacles. At this point the walrus won't be able to mount any further offense, and the squid probably won't be strong enough to hold it in place unless the flippers of the pinniped are trapped against its body. It might be a stalemate on most occasions, but the possibility of the squid drowning the walrus is about the same as the possibility of the walrus impaling the squid's mantle with its tusks. The beak of the squid would take a long time to chew through the hide of the walrus, and it won't likely be a major factor in this fight. If the walrus doesn't win right away, it will likely lose. Tough fight to assess, but edge to the colossal squid.
Muskox vs Rodeo bull (at parity): Muskoxen are sturdy, shaggy bovids with sharp horns that point down & then back up on each side of their heads. They typically fight by charging & ramming with their heads, but will also hook with their horns to impale enemies. Rodeo bulls have sharp horns that curve out & up (and sometimes forward) on each side of their heads. They are capable of making violent turns & thrusts to utilize these horns offensively. The rodeo bull's horns are better shaped for combat, and its high level of aggression should give it the nod over a muskox. Rodeo bull wins.
---------- FOLLOW-UP ----------
QUESTION: In canine vs feline match ups, who do you think usually wins and why? I know every match-up is different, but which group do you favor on average.
Who do you think is the most agile canine?
African Wild Dog vs Collared Peccary
Haast's Eagle vs Grey wolf
Wolverine vs harpy eagle
dhole vs honey badger
kelenken vs postosuchus
postosuchus vs lion
giant otter vs giant moray eel
Archaeotherium mortoni vs bengal tiger
71 lbs Dwarf crocodile vs 66 lbs giant moray
yellow anaconda vs dhole
megalania vs daeodon
Inostrancevia vs hyenadon gigas at parity
ANSWER: Hello again Johnny.
Q: In canine vs feline match ups, who do you think usually wins and why? I know every match-up is different, but which group do you favor on average?
A: Both have their advantages, but cats are typically better fighters when absolute weights are considered. Lions & tigers can exceed 500lbs, and grey wolves (the largest wild canids) rarely top 130lbs. A dog will need a size advantage to compete consistently with a cat in most situations, but there are exceptions. Felines usually have greater speed & agility, and have much better use of their forelimbs for grabbing & controlling. Having claws is a nice advantage for cats as well, as they can swipe or hold with their front ones & kick vigorously with their back ones (usually when on their backs or sides). The ability to apply a finishing bite (on the throat, neck, snout, or spine) is another asset for cats, and they can do this while having control of their victim's movements with their paws. Canines usually have bigger bites (when the weights are close), and much better stamina. Any close fight between a dog & a cat will gradually favor the dog as time goes by (the cat will tire & look to disengage). It's hard to give canines a fair shake with a question like this because the felines get much bigger, but some dogs can definitely hold their own against cats when the weights are close. Tigers, lions, & jaguars are too large & formidable for any single canid on the planet and would dominate almost every encounter. Leopards, pumas, & snow leopards would be favored against any canid, but grey wolves & a small handful of domestic dogs would make a decent showing against them. A grey wolf would defeat the slightly larger cheetah on most occasions, and an African wild dog would be good competition for a similar-sized Eurasian lynx. American Pit Bull Terriers, Staffordshire Bull Terriers, & American Bulldogs (to name a few) would be good matchups for any cats in their weight range, and may be favored on occasion (depending on the species of cat). Felines can explode into action for a short amount of time, but canines are made for the long haul. Overall, I do favor felines over canines on most occasions, but not across the board.
Q: Who do you think is the most agile canine?
A: Typically the most agile animals are the smaller ones. Foxes & jackals are quite agile, and they are probably close to the top among canines. African wild dogs are agile as well, and despite their larger size, are probably not far off from the fox & jackal. The fox would probably get my vote.
African Wild Dog vs Collared Peccary: The African wild dog will weigh about 20% more than the collared peccary. Collared peccaries have sharp tusks that can easily injure an African wild dog, and has enough quickness to combat most of the attacks of the canid. African wild dogs are very efficient as a team, but solo ones are capable fighters (strong bites/good lateral movement). The peccary will have a good chance of driving the wild dog away, but may have trouble against a persistent one. The collared peccary will be favored at parity, but it's probably close to 50/50 with the given weight difference (slight edge to peccary).
Haast's Eagle vs Grey wolf: The grey wolf will weigh over 4 times as much as the Haast's eagle. The Haast's eagle is well-known for its ability to dispatch moas (huge, flightless birds) with an aerial attack despite weighing less than 10% of its quarry's weight. The eagle was able to pull this off because the larger moa had no way to defend itself from something attacking it from above. The grey wolf is only 1/3rd of the moa's weight, but it has the means to counter-attack most assailants with its powerful jaws. Raptors are great hunters, but aren't great fighters after the point that an initial attack doesn't incapacitate its target. Their bodies aren't made to withstand a struggle to the same degree terrestrial animals can. The Haast's eagle would have a chance to land a good strike from the air if the wolf wasn't paying attention, but a wolf aware of the bird's presence will be a dangerous target. The bite of a grey wolf would make short work of a Haast's eagle if it can reach it, and that will likely be the case on most occasions. Grey wolf wins.
Wolverine vs Harpy eagle: The wolverine will weigh over twice as much as the harpy eagle. Harpy eagles are great hunters, but will likely need an ambush to have a chance against a wolverine. The wolverine's thick fur will afford it some protection against the eagle's talons (although a well-placed strike will have a chance to dispatch the mustelid), and the bird won't be able to withstand a counter-attack from the mammal. There aren't many places a harpy eagle can grab on a wolverine where it can't effectively fight back. The strong bite, claws, & ferocity of the wolverine will be potent assets against the eagle, and it should win most of the time. Wolverine wins.
Dhole vs Honey badger: The dhole will weigh about 25% more than the honey badger. Honey badgers are famous for being fearless & aggressive, and have thick skin that protects them from many attacks. They have strong jaws & claws, and have supple bodies that enable them to turn & counter-attack from many positions. The dhole is a nimble canid with a strong bite of its own, and although it will have a mobility advantage over the honey badger, it won't be able to inflict enough meaningful bites without risking injury itself. The honey badger will hold up much better against the dhole's offense than the other way around. The dhole will be driven away in a realistic encounter if it doesn't have assistance from other dholes. Honey badger wins.
Kelenken vs Postosuchus: Postosuchus weighed 3 times as much as a Kelenken using the higher estimates, but only about 30% more using the lower estimates. The lighter version of Postosuchus will be a good matchup for Kelenken. Postosuchus had a huge set of jaws with serrated teeth designed to tear flesh, and bony plates (osteoderms) along its back. Kelenken had strong legs (possibly for kicking) and a huge beak (probably for biting & striking). Postosuchus would have held up well enough against the Kelenken's assault to deliver its huge bite (which would have swung the advantage to it), and despite not having the greatest mobility, would have eventually subdued the terror bird. The heavier version of Postosuchus would dominate this fight. Postosuchus wins.
Postosuchus vs Lion: Postosuchus weighed around 3 times as much as a lion using the higher estimates, but only about 30% more using the lower estimates. The lion has the usual big cat assets (speed, agility, killing experience, jaws & claws), and is a formidable opponent for anything in its weight range & above. Postosuchus has huge jaws, bony plates on parts of its back, and the ability to rise up on 2 legs. However, its mobility wasn't great enough to avoid getting leaped upon by the quick & agile lion, and its armor-like hide wasn't prominent enough to offer complete protection from the felid's bite. The bite of Postosuchus would be devastating to a lion if caution wasn't exercised, but most of the time the cat would be able to avoid this. Although the heavier version of Postosuchus would defeat the lion on most occasions, the lighter one would be at a slight disadvantage.
Giant otter vs Giant moray eel: The giant otter will weigh slightly more than the giant moray eel. Both animals have good agility in the water. Moray eels have very sharp teeth, and the otter won't be able to avoid getting bit during this skirmish. However, otters have strong jaws & pointed teeth that can cause a lot of damage to the eel's body. The otter will probably be a bit more durable in regards to injuries received, but either animal can win with enough bites. Edge to giant otter.
Archaeotherium mortoni vs Bengal tiger: Archaeotherium was slightly heavier than a Bengal tiger. Archaeotherium was a pig-like creature with dangerous tusks & a huge bite. The tiger's quickness & agility will be important assets in this fight, as it will need to avoid the Archaeotherium's offense & find the right opportunity to engage it with its front limbs. The tiger will have a difficult time holding the Archaeotherium in place, but should be able to get into a favorable position to secure a finishing bite (to the neck/throat). Bengal tigers can bring down buffalo much larger than themselves, and that ability will help them in overcoming the Archaeotherium. Could go either way, but the Bengal tiger has the edge.
Dwarf crocodile (71 lbs) vs Giant moray (66 lbs): The dwarf crocodile will have a strong, gripping bite & armored hide as its chief assets, and the giant moray will have sharp teeth (designed to hold & tear) & greater agility. The crocodile's hide will protect it long enough to secure a bite of its own, and the moray will find escape difficult. It may or may not be able to effectively counter-bite (depending on where it is bitten itself). Dwarf crocodile wins.
Yellow anaconda vs Dhole: The yellow anaconda will weigh over 2 1/2 times more than the dhole. Large constrictors are not generally good fighters on land due to their poor mobility & limited stamina. Dholes have good mobility on land & excellent stamina. The size of the yellow anaconda will pose a problem for the dingo, however, as it will take an accumulation of bites to wear it down (and this will put the dingo in danger of getting bitten & held by the snake's backward-pointing teeth). Once the snake seizes a part of the dingo securely in its jaws, it will pull its coils in to begin wrapping the canid up. The dingo won't have a good chance to escape once this occurs. It can win if it's quick & cautious, but the fast strike by the anaconda will probably find its mark before fatigue sets in. In water the dingo is toast, but on land it will be a close contest. Slight edge to the yellow anaconda.
Megalania vs Daeodon: There are many varying estimates for the weight of Megalania, with the higher ones exceeding 2 tons. However, more conservative ones place it as being about 20% heavier than Daeodon. Daeodon was a large, pig-like creature with bone-crushing jaws & dangerous tusks. It likely had a decent mobility advantage over Megalania, but would be vulnerable to the reptile's bite when it came close (due to the quick movements of the giant lizard). Assuming Megalania shared traits with the modern Komodo dragon (toxic secretions in saliva; tough armor-like hide), Daeodon would have had difficulty causing enough damage itself before getting bit (and Megalania's bite would have probably induced shock). Close fight; edge to Megalania.
Inostrancevia vs Hyaenodon gigas (at parity): This would be a close fight. It would basically be a bite vs bite affair, and each animal had a formidable bite. Hyaenodon had powerful jaws with teeth designed to tear flesh and crush bone, & Inostrancevia had long, front teeth designed to stab and penetrate tough hides. Although Instrancevia probably had the more damaging bite overall, Hyaenodon was probably the quicker animal. Close to 50/50.
---------- FOLLOW-UP ----------
QUESTION: Is the spine of a wolf as flexible as a big cat's? If its not, why doesn't thw wolf need a back as flexible. I saw on a documentary that lions and tigers needed a more rigid spine because of their higher upper-body strength.
Blue (Grand Cayman) Iguana v Rock Monitor
game bred english bulldog vs wolverine
game bred english bulldog vs eurasian badger
Great Plains Wolf v Striped Hyena
water monitor vs giant otter at parity
wedge tailed eagle vs secretary bird
Dinocrocuta gigantea vs hyaenodon gigas (at average size, and at parity)
perentie vs Velociraptor mongoliensis
Q: Is the spine of a wolf as flexible as a big cat's? If it's not, why doesn't the wolf need a back as flexible? I saw on a documentary that lions and tigers needed a more rigid spine because of their higher upper-body strength.
A: I would certainly think felids have more flexible spines than canids. Wolves usually move with all 4 paws near the ground, but big cats jump & climb, and that introduces more angles of movement and makes a flexible spine a necessity. Lions & tigers likely have more rigid spines than, let's say, a cheetah, but they're still quite flexible.
Blue (Grand Cayman) Iguana vs Rock Monitor: The rock monitor will weigh about 60% of the blue iguana's weight. Despite its smaller size, the monitor has more speed & mobility, and is better suited for combat. Rock monitor wins.
game-bred English Bulldog vs Wolverine: The English Bulldog will weigh about 30% more than the wolverine. Wolverines are among the strongest mammals pound-for-pound, and often drive larger predators away from kills. They can hold their own against most other animals in their weight range and above. English Bulldogs have stocky bodies & strong bites, but the modern ones aren't close to the level of an American Bulldog in regards to combativeness, fighting skill, or stamina. English Bulldogs were rather combative (used in bull baiting) long ago, and if one could somehow be assigned a "game-bred" label, it would probably resemble the dog from the past. Wolverines are fierce fighters (use jaws & claws), and would probably be a good match for one of these English Bulldogs. Even so, the English Bulldog's physical limitations would hamper its efforts in a battle with the mustelid. Edge to wolverine.
game-bred English Bulldog vs Eurasian Badger: The English Bulldog would weigh over twice as much as the Eurasian badger. Eurasian badgers are capable fighters (powerful bite, sharp claws, solid build), and would have a decent chance to send a regular English Bulldog packing. However, with this canid being assigned a "game-bred" level, it will be a tough battle for it. The large bite of the English Bulldog will be a difficult problem for the badger to solve, and it won't be favored as a result. Edge to game-bred English Bulldog.
Great Plains Wolf vs Striped Hyena: The wolf weighs about 20% more than the striped hyena. striped hyenas can be aggressive & combative, and often meet wolves in some areas of their habitat. Striped hyenas aren't as robust as spotted hyenas (or as large), but they have a very strong bite force. The wolf would be larger, but the feisty hyena would still be a good match for it. Close to 50/50.
Water Monitor vs Giant Otter (at parity): Water monitors have jaws, claws & tails to use as weapons. The giant otter has a very strong bite of its own & a decent degree of forepaw usage. Otters have much better mobility in the water than on land, and this would make a difference in the result. A giant otter's maneuverability in the water would exceed the monitors, and it would be favored as a result. On land, where the otter is rather ungainly, the battle will be closer (close to 50/50).
Wedge-tailed eagle vs Secretary Bird: The wedge-tailed eagle will weigh about 25% more than the secretary bird. If the eagle attacks from the air, it will have a decent chance to overcome the secretary bird. However, if the eagle lands, it will be vulnerable to the secretary bird's claw strikes. Overall I'd favor the eagle, but it depends on how the battle begins.
Dinocrocuta gigantea vs Hyaenodon gigas (average size): Hyaenodon gigas was about 25% heavier than Dinocrocuta gigantea. Both had strong jaws, and resembled hyenas (though neither were related to them). Dinocrocuta had tremendous crushing power in its jaws, while Hyaenodon's powerful jaws (with sharp teeth) could tear flesh & crush bone. Hyaenodon was from an early time than Dinocrocuta, and was likely not quite as robust. The weight advantage gives Hyaenodon gigas the edge.
Dinocrocuta gigantea vs Hyaenodon gigas (at parity): Hyaenodon gigas may have been a bit faster, but Dinocrocuta probably had a stockier build (and perhaps a stronger bite). I'd give the edge to Dinocrocuta gigantea.
Perentie vs Velociraptor mongoliensis: Interesting matchup between 2 equally-heavy animals with diversified offenses. The perentie had jaws to bite with, claws to hold & rake with, & a long tail to strike with. It also has good stamina & can make quick movements. Velociraptor also had jaws to bite with, front claws to grab with, & kicking claws that were long & curved. Velociraptor was bipedal, and likely had better lateral movement (but could also leap). Velociraptor's weaponry could cause more damage in a shorter amount of time than the perentie's, and would have the edge here. Velociraptor wins.