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Interspecies Conflict/Battles between apes, bears,and extinct animals


QUESTION: I think these are weird. but i hope you could answer them
moose vs giant eland
Gigantopithecus vs kodiak bear
Gigantopithecus vs short faced bear
rodeo bull vs bear(
woolly rhino vs woolly mammoth
ceratoaurus vs short-faced bear
american lion vs ussuri brown bear
gorilla vs wildebeest
gorilla vs tiger
gorilla vs three wolves
gorilla vs smilodon populator
american grizzly bear vs smilodon

ANSWER: Hello Johnny.  This question had been moved to the question pool and I picked it up, so I'll send you those answers.

moose vs giant eland: The moose will only be 70-80% of the eland's weight.  The moose's antlers are large and wide, and would serve as a barrier between itself and the eland, but wouldn't be able to be used offensively to cause serious wounds to the larger antelope.  The moose could use them to try to push or ram the eland, but the eland's larger size will give it the edge in a battle of strength.  The eland is more agile than the top-heavy moose, and will eventually find an opening to stab with its spiral horns.  At equal weights I would slightly favor the moose (because it would then be the stronger animal), but with the weight advantage here the eland would be favored.

gigantopithecus vs short-faced bear: Gigantopithecus blacki weighed over half a ton, and was believed to have physical similarities to today's gorillas & orangutans.  Short-faced bears weighed close to a ton (larger than today's largest bears).  The bear would easily overpower the ape, and use its claws to great effect.  Even at equal weights the bear would dominate this encounter.

rodeo bull vs bear: Only the largest bears (Kodiak bear/polar bear) would have a chance here.  The rodeo bull will typically exceed the weight of any bear, and bear's aren't accustomed to tackling large, mobile opponents with the bull's level of weaponry.  Rodeo bulls can make quick, powerful, turning movements to gore with their horns or kick with their hooves, and a bear won't have the mobility to get out of the way.  The bear's paw strikes won't have as much effect as the bull's charges, and a paw swipe would have to be precise to have a serious effect on the bovid.  The bear might opt to grab the bull's head and try to control it (and wrestle the bull to the ground), but the larger bull will likely still find enough separation distance during the struggle to plow into the bear with its horns.  The bear can win this, but everything would need to perfectly fall into place for it to succeed.  Most of the time the rodeo bull will be too much for the bear to handle.

woolly rhino vs woolly mammoth: This matchup would be similar to a white rhinoceros vs an African elephant (these modern versions were the same size as the prehistoric ones).  I slightly favor a rhino over an elephant at equal weights, but here the woolly mammoth will be 65-70% larger.  The horn of the woolly rhino is an effective weapon, but the size, strength, and massive tusks of the woolly mammoth will be too much for the rhino to deal with.  The tusks of the mammoth weren't positioned to stab effectively, but the force of any part of the tusks slamming into an opponent could have caused prominent concussive injuries.  The woolly mammoth would win this matchup a large majority of the time.

ceratosaurus vs short-faced bear: These animals would be close in weight.  Ceratosuarus would try to bite the bear, and the bear would likely use paw swipes initially before attempting to topple the dinosaur with its strength.  The short-faced bear wasn't built quite as robustly as today's brown bears, and probably didn't have the same level of grappling strength.  Against the taller Ceratosaurus, the bear would have sustained several bites before it could wrestle the dinosaur long enough to compromise its balance.  Bears are tough and durable, but it won't be able to take too many bites from the large jaws & teeth of the Ceratosaurus before succumbing to its wounds.  The short-faced bear is certainly capable of winning here, but it will probably be overcome by the dinosaur more times than not.  Close fight.

american lion vs ussuri brown bear: The American lion was much larger than today's lions, but the Ussuri brown bear can still get larger (approximately 40% larger).  Brown bears are a close match for lions at equal weights, but the size advantage of the brown bear here will swing the advantage in its favor.  The American lion have more agility & quickness (and finishing experience), but the bear would be stronger and have much greater endurance.  The lion's attacks could be repelled by the bear most of the time.  The bear's ability to turn quickly and utilize its claws against an opponent attacking from the rear will help it here.  The bear is too large for the cat to defeat.

gorilla vs wildebeest: The gorilla would be about 75% of the wildebeest's weight.  Gorillas aren't used to taking on large animals (outside their species) in face-to-face confrontations.  Although the gorilla possesses the physical ability to subdue the antelope, it doesn't have the know-how.  It won't know to tackle the wildebeest like a football player and start pounding on it.  Gorillas just don't do that.  Wildebeests are battle-tested, and would be able to use its horns effectively against the ape.

gorilla vs tiger: There are several species of tigers of various sizes.  The gorilla would be completely outmatched against most of them.  Siberian tigers & Bengal tigers will be larger than the gorilla, and their agility, jaws/claws, & killing experience will enable them to make short work of any gorilla.  Gorillas are very strong (and have clubbing forearms and strong bites), but they aren't used to taking on similar-sized predators as formidable as a tiger.  The tiger's claws would cause serious injuries to the gorilla, and the cat's agility would enable it to get into a position to land a finishing bite to the neck or throat.  A gorilla would have to be close to twice the weight of a big cat to compete with it, and only the Sumatran tiger falls into that category (I would still favor the tiger, however).  A leopard or puma would be well within a gorilla's capabilities to defeat face-to-face, but even that wouldn't be a guarantee.  Once cats start approaching the size of a jaguar or a Sumatran tiger, they become too much for a gorilla to deal with.   

gorilla vs 3 wolves: A gorilla can weigh as much as 3 wolves combined, but it will be in trouble here.  The wolves will work well as a team, and will use their greater mobility to dart in and out while landing bites from all sides.  The gorilla won't be quick enough to use its clubbing forearms to great effect, so its chances of taking out any of the wolves is small.  If it manages to get a hold of one of the wolves early on it will be powerful enough to subdue it, but it will be attacked by the other 2 wolves from behind and have to turn to defend itself.  The wolves will eventually wear the gorilla down and finish it if they're determined to do so.  Wolves are well-practiced at teaming up against animals larger than a gorilla (and some of these have horns & hooves).  I would favor a gorilla against 2 wolves, but 3 is too many.

gorilla vs smilodon populator: The Smilodon populator is the largest of the saber-toothed cats, and it will be over 50% heavier than the gorilla.  The Smilodon was powerfully built (almost bear-like in comparison with a typical big cat), and was practiced at tackling large, dangerous prey.  It long, sharp upper canines (just under a foot long) could be driven effectively into the soft area of an opponent's neck to dispatch it quickly.  The gorilla would be completely overwhelmed here.  Even the Gigantopithecus blacki (well over twice the weight of a modern gorilla) would be outmatched by the Smilodon populator.

american grizzly bear vs smilodon: This would be a close fight.  The grizzly bear will be a little heavier than the cat, but the Smilodon had a strong, stocky build that would be closer to matching the bear in strength than today's big cats.  The bear's claws will be an effective asset, but this will turn into a grappling match.  The because the Smilodon is used to using its long sabers to finish large, strong opponents, it will have the slight advantage if the weights aren't too far apart.

Best regards.

---------- FOLLOW-UP ----------

QUESTION: thanks for answering my first questions. i am a little shocked that weight is what allowed the bear to beat the american lion, but it makes sense despite the lion's bite and agility. i have some more questions, most are of extinct animals
embolotherium vs woolly rhino
dinohyus vs short faced bear, kodiak, and polar bear
american lion vs marsupial lion
1,600 lbs enteolodont vs andrewsarchus
smilodon populator vs american lion
smilodon fatalis vs europeon cave lion
carnotaurus vs short faced bear
megatherium vs mastodon
smilodon fatalis vs siberian tiger

ANSWER: Hello again Johnny.

embolotherium vs woolly rhino: The Woolly Rhinoceros had a decent weight advantage and better weaponry.  Its long, sharp front horn could cause more damage to the Embolotherium than the Embolotherium's flatter, blunter horn could cause to it.  Equal weights would be a closer fight, but the rhino would still be favored.

dinohyus vs short-faced bear: The Dinohyus (also known as Daeodon) was similar in weight to the short-faced bear.  The Dinohyus had dimensions similar to a wood bison, but had a head that looked somewhat like a warthog's.  It also had a strong bite capable of causing damage in a conflict.  The short-faced bear was not as robustly built as today's brown bears, and would have had some difficulty controlling the head of the Dinohyus well enough to keep itself from being tusked.  Close fight; slight edge to the Dinohyus.

dinohyus vs kodiak bear: The Kodiak bear is stockier than the short-faced bear was and is probably better at dealing with conflicts against large animals, but it is only 70% the weight of the Dinohyus.  The bear would have a small chance to succeed with some well-placed paw swipes, but most of the time it would be overwhelmed by the Dinohyus.

dinohyus vs polar bear: The polar bear, like the Kodiak bear, would be giving up too much weight to effectively control and subdue the Dinohyus.  The bear would need to use its strength to topple the pig to have a chance to win, and that wouldn't be likely.  The Dinohyus would win most of the time.  The Pleistocene polar bear (Ursus Maritimus Tyrannus) would have been able to pull this off, but not the modern polar bear.

american lion vs marsupial lion: The marsupial lion was very stocky and had extremely powerful jaws, but it weighed much, much less than the American lion.  This would be similar to a hyena taking on a Siberian tiger (in some regards).  The marsupial lion could have held its own against many animals close to its weight range (and perhaps larger), but the American lion was 3-4 times heavier and could have controlled the smaller animal from the onset of the fight.

1600lb entelodont vs andrewsarchus: Estimations for Andrewsarchus' size vary (the top half of its jaw is the only fossil we have to date), but one of the more conservative estimates place it somewhere around 2200lb.  At this weight, the Andrewsarchus would be able to overcome the 1600lb Entelodont.  Both animals had strong jaws, and the Entelodont was probably taller at the shoulder.  At equal weights this would be a close fight, but the 600lb advantage would be enough to grant Andrewsarchus the victory on most occasions.

smilodon populator vs american lion: These two cats were similar in weight, but the Smilodon had a more powerful build.  This would have enabled it to control the positioning battle and give it a good chance to impale the lion's neck with its long upper canines.  The Smilodon's muscular build would have given it more force behind its swipes in a war of the paws (the lion's swipes might have been faster, though, and it probably had a reach advantage).  Close fight, but the Smilodon Populator has a little bit more going for it.

smilodon fatalis vs european cave lion: These cats were about the same size, and the matchup between them would have been similar to the matchup of Smilodon Populator and the American lion.  For the same reasons, slight edge to the Smilodon.

carnotaurus vs short-faced bear: This would be similar to the Ceratosaurus vs short-faced bear, but the Carnotaurus was slightly larger than the Ceratosaurus.  For the same reasons in the former theropod vs bear matchup, I would slightly favor the Carnotaurus.

megatherium vs mastodon: Estimations for the size of Mastodon vary somewhat, but it was similar in size to an average-sized elephant (which would put it in the weight range of the Megatherium).  The Mastodon was stocky and had long, sharp tusks that were pointed forward enough to be used like spears.  The Megatherium, when standing upright, was twice as tall as the Mastodon's shoulder height, and had huge claws that could serve as weapons similar to the front claws of a grizzly bear or a giant anteater.  The giant sloth's skin was reinforced with small pieces of bone that served as a type of armor.  The Megatherium would try to strike the Mastodon with these claws (which would have been able to injure it), and the Mastodon would have attempted to impale the Megatherium with its tusks.  The sloth's tough skin would have offered some protection against the Mastodon's charges, but it wouldn't have had the mobility to avoid repeated attacks from it (and this would be key).  Even if the tusks didn't penetrate the tough skin of the Megatherium every time, the concussive force of the blows would probably be profound enough to cause internal injuries.  A few well-placed strikes from the Megatherium's claws would be able to repel (and perhaps subdue) the Mastodon, but the more likely result would be the Mastodon overpowering the giant sloth by ramming into it.

smilodon fatalis vs siberian tiger: This would be similar to the Smilodon Fatalis vs Cave lion matchup (the Cave lion and the Siberian Tiger have similar weights & capabilities).  The Siberian tiger probably has a greater reach and quicker movements, but the Smilodon had the edge in power & weaponry.  Close fight, but Smilodon wins.

Best regards.

---------- FOLLOW-UP ----------

QUESTION: your answers are great, the explainations for them are very good especially the one for megatherium vs mastodon. i have a third batch of questions.
hyenadon gigas vs smilodon populator
hyenadon gigas vs american lion
american lion vs siberian tiger
800 pound grizzly bear vs hyenadon gigas
1,300 lbs bear dog vs hyenadon gigas
bear dog vs american lion
bear dog vs smilodon populator
dynohyus vs ceratosaurus
800 lbs grizzly vs bear dog
ceratosaurus vs utahraptor
andrewsarchus vs short faced bear
Gigantopithecus vs american lion
Gigantopithecus vs smilodon fatalis

Hello Johnny.

hyaenodon gigas vs smilodon populator: These animals would be close in size (the Hyaenodon slightly heavier).  Hyaenodons had very large, strong jaws suited for crushing bone (but not stabbing or slicing), and weren't quick runners.  The powerfully-built Smilodon would have had greater agility, and would have been able to dominate the positioning war with the creodont once they engaged.  The Smilodon's upper canines would have been utilized by stabbing into the neck of the Hyaenodon.  The crushing jaws of the Hyaenodon gigas could potentially cause grave injuries to the Smilodon if it wasn't careful, but on most occasions the feline would have been able to avoid them and finish with a bite of its own.   

hyaenodon gigas vs american lion: Like the Smilodon, the American lion would have to be careful, but should have the agility to control the positioning battle.  The fast paw swipes of the cat would also be an advantage.  A solid bite by the Hyaenodon could spell doom for the American lion, but the feline should prevail more times than not.

american lion vs siberian tiger: These 2 cats are similar at equal weights, but the American lion was a little heavier/bigger.  The size advantage would be enough to favor the lion.

800lb grizzly bear vs hyaenodon gigas: The grizzly bear will have the advantage of its paws & claws, but the Hyaenodon will have the stronger bite and may be over 30% heavier.  The bear might be able to control the larger animal's head and possibly force it to the ground, but attempting this action will put the bruin in range of the Hyaenodon's massive bite.  It would probably take more than one well-placed bite from the creodont to overcome the bear, and the bear's claws could potentially cause serious injury to the Hyaenodon if it came too close.  At equal weights I would favor the bear, but at these weights I would give the slight edge to the Hyaenodon gigas.

1,300lb bear dog vs hyaenodon gigas: The bear dog had some use of its forelimbs (somewhat like a bear) and could have used swipes with them as offense.  However, the Hyaenodon had the bigger, stronger bite.  The largest size estimations for Hyaenodon gigas (which may not be reliable) would still put it as being only 85% of the bear dog's weight.  The bear dog's bite wasn't as strong as the creodont's, but it was still strong enough to inflict damage to it.  At equal weights I would favor the Hyaenodon, but at these weights the bear dog will have the size & robustness to control the positioning (with its forelimbs).  Edge to the bear dog.

bear dog vs american lion: If we use the 1,300lb version, the bear dog will have enough of a weight advantage to be favored.  The ability to use its forearms offensively will aid the bear dog in defending a "finishing bite position" from the American lion.  A battle at parity will be close, but here the bear dog is too heavy.

bear dog vs smilodon populator: The stoutly-built Smilodon would probably be able to successfully wrestle around with an equal-sized bear dog, but the 1,300lb version of it will be too strong.  Getting its long sabers into stabbing position will be problematic for the Smilodon against this particular opponent at these weights.  The Smilodon can certainly pull it off, but the odds are slightly against it here.

dinohyus vs ceratosaurus: Dinohyus (or Daeodon) had strong jaws & tusks, but they probably wouldn't have been able to cause as much damage to the Ceratosaurus as the Ceratosaurus' large jaws could cause to Dinohyus.  A strong charge by the pig might have come close to toppling the theropod, but the Dinohyus' offense would have been hard to apply without putting itself in range of the jaws & teeth of the Ceratosaurus.  In contrast, a Triceratops had the weaponry (2 long, sharp horns over its eyes) to seriously injure an attacking Tyrannosaurus, but it had far better assets at its disposal than the Dinohyus does here against the Ceratosaurus.  The Ceratosaurus should win most of the time, but it won't be easy.

800lb grizzly bear vs bear dog: The 1,300lb version of the bear dog will be too big for the grizzly bear to handle.  Both animals have claws & jaws that can be wielded effectively, but the weights would need to be closer to make this a fair fight.  At parity I would favor the grizzly bear slightly, but not against a similarly-armed opponent over 60% heavier.

ceratosaurus vs utahraptor: The Utahraptor had a very impressive array of weaponry (jaws & teeth/sickle-like claws) and could have caused quick, slashing injuries to opponents with powerful kicks.  The Ceratosaurus, however, was almost twice as heavy and had a large set of jaws & teeth.  While it is possible a few well-placed kicks from the Utahraptor could disembowel the larger Ceratosaurus, the chances are greater that the larger theropod would catch the Utahraptor in its jaws and finish the fight.  I would back the Utahraptor at parity, but at these sizes I favor the Ceratosaurus.

andrewsarchus vs short-faced bear: The short-faced bear wasn't as robust as today's bears (built more for running), and wouldn't have been as adept at tackling similar-sized opponents as, let's say, the polar bear or the Kodiak bear.  Its ability to use its forearms to swipe at/control adversaries was still good enough to aid it in this matchup, but the large, powerful jaws of the equally large Andrewsarchus would have been problematic.  It would have been difficult for the short-faced bear to mount a steady offense (with paw swipes & bites) and avoid the jaws of the Andrewsarchus at the same time.  In many ways this reminds me of spotted hyena vs sun bear (which is close).  This is close to 50/50.

gigantopithecus vs american lion: Even though Gigantopithecus blacki was a little bit heavier than the American lion, it would be outmatched against the cat.  Lions are much quicker than apes, and have superior weaponry, agility, & killing experience.  The Gigantopithecus' strength would help it to hold off the American lion for a short time, but it would not be able to control the cat's claws (front & back), and wouldn't be able to stop the lion from positioning itself for the finishing bite.  This would be similar to a gorilla vs lioness or orangutan vs puma (and I would favor each cat in those matchups).

gigantopithecus vs smilodon fatalis: This would be a decent fight, but I would favor the Smilodon.  The cat will be half the ape's weight, but will have advantages in agility, quickness, weaponry (claws & long upper canines), and killing experience.  The Gigantopithecus has the ability to hurt the feline with its strong arms & its bite, but it will eventually fall victim to a finishing bite on most occasions.  Edge to the Smilodon fatalis.

Best regards.

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.


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.

Associate degree in unrelated field; biology classes in college.

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