During the Ice Ages, there were mammals that are very familiar to us like deer, pack rats, and ground squirrels. But there were also unusual mammals, most of them very large, that are now extinct.
Well, the cavemen drove big SUV's and caused them to go extinct. Uggore tried to warn them that if they didn't throw virgins in the volcano the climate would change, but the greedy and selfish capitalist pigs actually WANTED the earth to warm....