Denmark has twice as many pigs as there are people.
66
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8
Rattlesnake mating sessions have been known to last more than 22 hours.
232
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6