A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Cats recognise the voice of their owner, but never evolved to care.
22
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
Parrot parents "name" their children with a signature call.
112
Ants have tiny magnetic compasses in their antennae which help them navigate.
9
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
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