Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Tigers can see 6 times better at night than humans.
305
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8
Sheep, goats, octopuses, and toads have rectangular pupils.
7
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109