When you shave a guinea pig it looks like a little hippo.
19
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Domestic pigs average a top speed of about 11 miles per hour.
182
Squirrels forget where they hide about half of their nuts.
698
Gorillas can catch human colds and other illnesses.
205
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12