When you shave a guinea pig it looks like a little hippo.
19
Dogs have been man's pet for over 14,000 years.
224
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
The cat brain weighs about 30g.
167
A tortoise named Adwaita lived to 255 years old. To put it into perspective, he was born before the United States of America existed and his death was announced on CNN (1750-2006).
12
Squirrels forget where they hide about half of their nuts.
698