Megatheriums

The  Megatherium is a huge but peaceful vegetarian animal in the valley of Eodon. Leave it alone and it leaves you alone. However, should the adventurer get the idea to attack it, he/she will get an ugly surprise, an the Megatherium is a really stong and hard to kill animal.

Lore
''Megatherium. This ancestor of the modern tree sloths was a ground sloth the size of some modern elephants. Walking about on four legs, it was some 20 feet long and 6 feet at the shoulder, and weighed on the order of three tons. Its descendant in the Valley of Eodon is much the same, and behaves much like its tree - sloth relatives: Vegetarian, slow - moving, mostly peaceful. It is not, however, an easy kill for natives or dinosaurs, being capable of fighting savagely for its life.''

- from "Ultimate Adventures Magazine", Savage Empire