Some ribbon worms will eat themselves if they can't find any food.
-33
The penguin is the only bird who can swim, but not fly!
90
The world’s largest frog, the Goliath frog, can grow over 13 inches in length and can jump up to 10 feet in a single bound.
8
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12
A woodpecker can peck twenty times a second.
28
A slug has four noses.
136
Cattle are the only mammals that pee backwards.
33