A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
When dragonflies mate, their tails form a love heart.
22
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
A 42-foot sperm whale has about 7 tons of oil in it.
209
There's a competition in Sweden called Kaninhoppning, or rabbit show jumping.
-12
The oldest creature ever found was Ming the clam at an admirable 507 years old.
16
Parrot parents "name" their children with a signature call.
112