The cat brain weighs about 30g.
167
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10