Interspecies Conflict/Big battles 2



Thanks so much for the previous very good answer

1)Tyrannosaurus rex (great specimen 14m lenght 5,5m hight 10t weight)
Spinosaurus (great speciemn 18n lenght 6,5m hight 14t weight)

2)Tyrannosaurus rex (great specimen 14m lenght 5,5m hight 10t weight)
2x african elephant (6,5t)

Argentinosaurus (great specimen 34m lenght 10m hight 95t weight)
1)10x albertosaurus (2,5t)
2)25x utahraptor (600kg)
3)2x tyrannosaurus (10t)
4)2x deynosuchus (11t) in shallow water
5)40x prehistoric hunter armed with a bow and arrow, long spear (with steel spike) and fire. They have a good organization.

Terror Bird (3m hight 350kg weight)
1) 250kg lion
2)2x20kg Haast's eagle
3)2x 100kg deinonychus
4)4x50kg wulf
5)2x 150kg lioness

Argentavis (90kg)
1)20kg Haast's eagle
2)60kg cheetah

1)hyaenodon gigas (500kg) vs smilodon populator (500kg)
2)hyaenodon gigas (500kg)vs 2x 150kg lioness
3)hyaenodon gigas (500kg vs 4x 100kg deynonychus

Hello David.

Tyrannosaurus (10t) vs Spinosaurus (14t): Tyrannosaurus was armed with huge jaws that could exert tremendous force when biting, and sharp teeth to rip flesh away in large chunks.  It likely attacked large game, incuding sauropods, hadrosaurs, & ceratopsians.  Spinosaurus had longer, thinner jaws that weren't nearly as strong, and conical-shaped teeth made for grasping fish and other moderately-sized aquatic prey items.  It also had more pronounced forelimbs with claws on them which may have been of some assistance in a conflict with another large theropod.  The jaws of Tyrannosaurus would have caused more serious injuries than the jaws of Spinosaurus, and the size difference wouldn't have been enough to make up for the effectiveness difference of each dinosaur's bite (or the fact that T-rex dealt with larger prey items).  Edge to Tyrannosaurus.

Tyrannosaurus (10t) vs 2 African elephants (6.5t): African elephants don't deal with predators larger than lions & crocodiles, and a Tyrannosaurus would have probably put them in a panic.  The bite of the Tyrannosaurus would cause serious injuries to the elephants, and their charges would not have the same level of effectiveness as, let's say, a charging Triceratops.  The Tyrannosaurus would know how to deal with the elephants (as it dealt with large adversaries often) better than the other way around, and even though the pachyderms might succeed in driving the theropod away on some occasions, a serious battle would favor the dinosaur.  Edge to Tyrannosaurus.

Argentinosaurus (95t) vs 10 Albertosauruses (2.5t): This would depend somewhat on the organization of the Albertosauruses, but they were likely too small to tackle a dinosaur the size of Argentinosaurus.  It would take several bites to seriously injure Argentinosaurus, but the sauropod's mighty tail would have disabled an Albertosaurus with a direct hit, and it could have easily crushed one by stepping on it.  If the Albertosaurus attacked using a strategy similar to a pack of wolves (bite from various sides & retreat to attack again), they might have a slim chance, but a regular encounter would favor the huge Argentinosaurus.  The vulnerable neck of the sauropod would be too high off the ground for the theropods to reach.  Edge to Argentinosaurus.

Argentinosaurus (95t) vs 25 Utahraptors (600kg): Utahraptors have decent bites, grabbing claws on their forelimbs, & kicking/slashing claws on their hindlimbs.  They were also quick, agile, good leapers, & likely worked well as a team.  Argentinosaurus, however, was huge.  Imagine 25 Velociraptors attacking a bull hippo!  The Utahraptors would have the ability to leap upon the sauropod, cling to it, and start biting & slashing without worry from an effective counter-attack.  It would take a very, very, long time, but 25 determined Utahraptors would eventually cause enough damage & blood loss to subdue the Argentinosaurus.  Edge to Utahraptors.

Argentinosaurus (95t) vs 2 Tyrannosauruses (10t): Tyrannosaurus had a long skull (over 1.5 meters) and a huge set of jaws, and 2 of them could have inflicted serious damage to an Argentinosaurus with an accumulation of bites.  However, Argentinosaurus could have caused significant impact injuries by swinging its long, thick tail.  The sheer weight of the moving Argentinosaurus would have been capable of knocking a Tyrannosaurus over, and the sauropod would have been in position to crush it underfoot.  Edge to Argentinosaurus.

Argentinosaurus (95t) vs 2 Deinosuchuses (11t) in shallow water: Deinosuchus was an alligator-like creature that reached lengths double that of modern crocodiles.  Its jaws were extremely powerful, and it could pull large animals into the water to drown them or twist them apart.  Argentinosaurus, however, was simply too large to have anything to worry about from a tandem of Deinosuchuses.  In the same way an African elephant would have nothing to worry about from 2 Nile crocodiles, Argentinosaurus would be too big & thick for the Deinosuchuses' attack to have any real effect.  Argentinosaurus wins.

Argentinosaurus (95t) vs 40 hunters (arrows, spears, fire): Argentinosaurus would present 2 dangers to the hunters: crushing by great weight & swinging of its large tail.  Both of these fates would be easily avoidable by an organized group of hunters as they would be able to attack the relatively slow sauropod from a distance.  It would take many, many arrows to slow the Argentinosaurus down, but the spears could be thrown from a safe distance, and their effect would likely be great after many hit their mark.  It is feasible that the spears could all land and not subdue the huge dinosaur, but unless the number of arrows were limited, the hunters would still have options.  They won't succeed every time, but with the right planning, they should succeed more times than not.  Edge to 40 hunters.

terror bird (350kg) vs lion (250kg): Kelenken was the largest terror bird, and was armed with a huge beak (for biting & perhaps striking), and sharp claws (for kicking).  Lions are accustomed to dragging large prey items to the ground (zebra, wildebeest, buffalo, etc.), and one would have the strength to do the same to the Kelenken.  By leaping upon the terror bird and holding on with its clawed forelimbs, the lion would be able to topple it & deliver a finishing bite to the neck.  The Kelenken's beak would certainly come into play (which is what makes it more formidable than the ostrich, which can only kick & run), but it might not be able to land a good bite or strike once the lion seizes it.  Good fight, but the edge goes to the lion.

terror bird (350kg) vs 2 Haast's eagles (20kg): The Haast's eagles would have the advantage of an aerial assault, but the terror bird's ability to bite with its huge beak would give it the means to defend itself if it was aware of the eagles' approach.  The eagles can succeed here, but attacking a 350kg Kelenken is a lot more dangerous than attacking a 200kg moa (a common prey item for a Haast's eagle).  Overall edge to terror bird.

terror bird (350kg) vs 2 Deinonychuses (100kg): Both combatants have diverse weaponry.  THe Kelenken was believed to have bitten with its strong jaws, struck with its beak, and kicked with powerful clawed legs.  Deinonychus could bite, grab with clawed forelimbs, & kick/slash with clawed hindlimbs.  It could also leap & move with great agility.  The dinosaurs would likely attempt to leap upon the bird to attack it from close quarters, but the Kelenken would have had the ability to counter-attack effectively on some occasions.  The terror bird would likely be able to injure one of the theropods rather quickly at the onset of the fight, and would have a good chance of dislodging the other one soon after.  Even if Kelenken wins, it may die of injuries sustained in the battle.  Both can win depending on how it plays out, but the larger terror bird should prevail more times than not.  Slight edge to terror bird.

terror bird (350kg) vs 4 wolves (50kg): This would be like 4 dingoes attacking an ostrich, but a Kelenken is better equipped than any modern terrestrial bird.  The wolves not being able to leap or utilize claws will make this a difficult battle for them, but their teamwork will give them a chance.  4 wolves can overpower a cervid (which is armed with hooves & antlers) weighing 7 times as much as themselves, so a terror bird won't be out of reach.  The speed & varied offense of the Kelenken will enable it to easily injure the wolves as they approach, but it will have a hard time focusing on a single target.  The most vulnerable part of the bird (the neck) will be out of range of the wolves' jaws for most of the battle.  Close fight; edge to the terror bird.

terror bird (350kg) vs 2 lionesses (150kg): Lionesses are excellent team hunters, and 2 of them will cause problems for a Kelenken.  The lionesses will have the quickness & agility to avoid most of the terror bird's kicks & beak attacks, and should be able to use their explosiveness to leap upon it.  The lionesses' forepaws & claws will be able to secure the cats to their quarry, and it will be hard for the Kelenken to counter-attack with its movement somewhat restricted by the weight of its attackers.  One of the lionesses will instinctively go for the throat to secure a suffocating bite (after the bird is brought down).  A lucky kick at the onset of the fight might swing things into the bird's favor, but it will be hard-pressed to succeed against 2 lionesses.  Edge to lionesses.

Argentavis (90kg) vs Haast's eagle (20kg): Argentavis was similar to a huge vulture, but had a strong beak than could be used as a weapon.  The Haast's eagle also had a formidable beak, but was armed with powerful talons as well.  This eagle was capable of killing moas (birds that resemble emus and weighed close to 200kg), so it had the ability to kill Argentavis with the right attack.  An aerial battle would certainly favor the much more maneuverable Haast's eagle, as it would simply attack from any angle it wanted to to subdue the larger bird.  However, if the fight occurred on the ground (perhaps a squabble at a carcass), the larger Argentavis would intimidate the eagle into a retreat or drive it back with its hooked beak.  Depends on how you look at it.  Overall edge to the Haast's eagle.

Argentavis (90kg) vs cheetah (60kg): Cheetahs are built for speed.  They aren't great fighters, and their need to stay injury-free (to be able to effectively hunt) causes them to back down from animals that they are actually capable of defeating in a serious battle.  A cheetah can certainly overcome an animal as large as Argentavis, but usually accomplishes this when the animal is fleeing from it.  The huge wingspan (over 7 meters) of Argentavis would likely be intimidating to a cheetah, and the cat would have trouble reaching its vulnerable neck while dealing with the reach of its sharp beak.  A cheetah would overpower the bird with an ambush, but would probably back down if the encounter was face-to-face.  Edge to Argentavis.

Hyaenodon gigas (500kg) vs Smilodon populator (500kg): Hyaenodon gigas had a long skull, powerful jaws, and teeth designed to rip flesh & crush bone.  Smilodon was a stocky, muscular felid with long upper canines used to impale victims in a vulnerable area (like the neck) to overcome them.  Smilodon used its powerful body to wrestle prey items to the ground, and its sharp claws would dig in for extra gripping ability.  Both animals had formidable bites, but the Smilodon's claws are a distinct advantage for this battle.  It would be able to control positioning once the 2 engaged, and deliver a fatal bite on most occasions.  Smilodon populator wins.

Hyaenodon gigas (500kg) vs 2 lionesses (150kg): Lionesses work well together when hunting & fighting, but this particular opponent is much larger & has a huge bite.  The lionesses will need to use their quickness & agility to avoid the jaws of Hyaenodon & leap upon it, but they won't have the power to easily drag it to the ground, and will be in danger of a counter-attack (bite).  The lionesses can win if one secures a good throat bite, but the Hyaenodon should be nimble enough to land an occasional bite of its own (which can seriously injure the cats).  Hyaenodon gigas wins.

Hyaenodon gigas (500kg) vs 4 Deinonychuses (100kg): Deinonychuses likely worked well as a group, and would attempt to leap upon the Hyaenodon from various directions.  If they could latch onto it & start a slashing attack all at once, they could induce blood loss & eventually overcome the mammal.  However, Hyaenodon gigas has huge crushing jaws, and could have killed a single Deinonychus with one bite.  It was also nimble enough to turn quickly to face each attacker as it approached, but it wouldn't have been able to repel them all initially.  A lot of this would depend on the ability of Hyaeneodon to reach the theropods clinging to its rear, back, & sides with its jaws before succumbing to blood loss.  On some occasions the Hyaenodon will kill 1 or 2 of the Deinonychuses quite quickly to gain an advantage, and other times it will be overwhelmed by the attack of the 4 reptiles & their diversified weaponry.  Close to 50/50.

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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