Woolly Rhino
So you’ve heard of the woolly mammoth, but have you heard of the woolly rhino? It's just like the regular rhino, these bad boys had a huge, sharp horn and weigh more than two Honda Civics stacked on top of one another. It would take entire tribes of cavemen to take one of these behemoths down, and it’s assumed that they lost the fight around 30% of the time, based on the weaponry and mannerisms of that time period.