Cows can sleep standing up, but they can only dream lying down.
745
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
All the pet hamsters in the world are descended from a single wild golden Hamster found in Syria in 1930!
34
The Wild Turkey is the only bird with a beard.
80
When it comes time to give birth, the female shark loses her appetite so she won't be tempted to eat her own pups.
280
The female pigeon cannot lay eggs if she is alone. In order for her ovaries to function, she must be able to see another pigeon.
65
A hedgehog's heart beats 300 times a minute on average!
14
Apple seeds are poisonous!
27