A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
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
In Australia, there are spiders big enough to eat snakes.
20
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
Dogs sometimes fake being sick to get attention.
26
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6