When cats are happy, they may squeeze their eyes shut.
10
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
Penguins have a gland above their eye that turns saltwater into freshwater.
12
A dairy cow can produce more milk when listening to music.
446
Dogs sometimes fake being sick to get attention.
26
Jumping fleas can accelerate 50 times faster than the space shuttle.
218