Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
The male seahorse carries babies and 'gives birth' to them instead of the female.
7
The Basenji dog is the only dog that is not able to bark.
4
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40
Allegedly, Chrysippus, the Greek philosopher, died of laughter after getting his donkey drunk and watching it try to eat figs.
47