[uh-oh]

also bigger doesnt mean better

there were DIREWOLVES

who died out because grey wolves were faster and killed more shit. direwolves were too big and retarded to compete with modern wolves for the same game, and they required more of it as fuel for there giant bodies

look at the giant bear, think it was a short snout bear or some shit. but it isnt around anymore for the same reason, there wasnt enough food to support it, and it was competing with its smaller cousins, grizzlies, black bears etc.

dinosaurs wouldve went the same route

except they have the benefit of shrinking/growing to what there enviornment supports alot more than a mammal does