A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45
Camels and llamas can cross breed. The offspring is called a ‘Cama’.
10
Vanilla flavoring is sometimes made with an ingredient from beaver pee.
82
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40
The Basenji dog is the only dog that is not able to bark.
4