Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8
Dogs have been man's pet for over 14,000 years.
224
Mahatma Gandhi used to travel with his goat so that he could have fresh milk.
11
Sheep, goats, octopuses, and toads have rectangular pupils.
7
The reindeer is the only mammal that can see UV light.
17