[HugoSimon]

Cite, please. "This is new and strange to me; I'll just assume it's safe and ignore it" is the dumbest survival instinct imaginable, except perhaps "Ooh, a bright, hot red light in the forest! I'd better lie down and go to sleep." Any wild animal that tamely walked up to strange animals would find itself very quickly removed from the population. ...

Oh, and if we're talking about herd animals--like mammoths, in all likelihood--they'll learn to distrust humans pretty quickly when Ook-Ook and D'leh start bringing down their herdmates.

I take back almost everything bad I ever said about you.