A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
12
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
In 1949, an official boxing match between a bear and a man was held. The bear won.
41
There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
9
Mosquitoes don't just bite you, they also pee on you.
11
The Savannah is the largest domestic cat breed. It resembles a small leopard and behaves like a dog. They can grow up to 40 lbs, have an eight foot vertical jump, and can be trained to walk on a leash and play fetch.
17
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6