Talk:Tyrannosaurus rex/@comment-69.14.59.34-20140927152517/@comment-25291258-20141005150047

It isn't mutual. They only really do it to migrate and breed they still remain singley functional and don't rely on other members of the species or really interact with each other at all. They are also highly canniballistic and unlike trex they won't just do it as a last resort, they do it whenever they get the chance.