How Injuries On Theropod Bones Show Which Were The Most Aggressive

Interesting. At the same time as showing how aggressive a theropod is, it could show which theropods were designed to fight and hunt dangerous prey because if there are healed wounds from the same species on it, than the species as a whole probably would hunt something dangerous.

Sorry if the wording is akward.

That might be why Allosaurus was the most succesful theropod in late jurassic Europe/America. While it wasn't as powerful as a Torovsaurus for example, it would've possible gone out of it's way to attack something larger or equally sized, simply to keep the population down and for an animal that lives in packs it would be fairly easy to defeat animals multiple times it's size.

I agree This kind of thing shows that combat may have been a last resort for ceratosaurs, spinosaurs, etc. while tyrannosaurs and allosaurs were ready to do battle at any second.

And I know what you're saying MrHappy ;)

Aren't bite marks found on majungatholus(majungasaurus) thought to be acts of cannibalism? The same goes for tyrannosaurus i believe..(Cannibalism in tyrannosaurs)

Bite marks found on theropods do not simply indicate species were more aggressive towards one another, but the fact that we have found a minority of individuals. Surely, not all theropods were just attacking each other.

Another theory is bite marks found on bone is the product of scavenging, which circles back to the cannibalism aspect.

Many tyrannosaurus specimens have been found with the tooth marks of another tyrannosaurus, and those wounds had healed.

Most bite marks found on Tyrannosaurs healed, which means that they were induced before the animal died, which means that they probably weren't meant to kill, but just to scare a rival away. Most bite marks that didn't heal were probably from scavenging since the T.rex was an opportunistic animal. I think that they rarely killed each other and when then in the breeding season, but this is just my opinion.

Most were certainly to scare the rival off. What that means is that Tyrannosaurs and Allosaurs were more willing to fight than Spinosaurs for example. 

Also, not all injuries are bite marks. For example, Big Al is covered in broken, but healed bones.

Also, face to face biting in theropods is often thought to be territorial and aggression.