The reindeer is the only mammal that can see UV light.
17
The two oldest cats on record lived to 38 and 34 years old, both were owned by the same owner and lived off a diet of bacon, eggs, broccoli and coffee.
12
Cows can sleep standing up, but they can only dream lying down.
745
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
When dragonflies mate, their tails form a love heart.
22