When cats are happy, they may squeeze their eyes shut.
10
Squirrels forget where they hide about half of their nuts.
698
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
When you shave a guinea pig it looks like a little hippo.
19
A scorpion can hold its breath for up to 6 days.
19