User blog comment:Pang.heefone/T-rex vs 10 Neanderthals/@comment-27334870-20180311063232/@comment-27334870-20180311083147

Mammoths were largely peaceful herbovores. T-Rexes are active predators that were of the same size, who would likely scare the heck out of a group of stone age Neanderthals, which would make even a coordinated attack hard to pull off.