Early American humans hunted car-size armadillos and used their shells for houses.
12
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
The CIA once spent $20 million on a cat equipped with gear to spy on the Soviets, but it was hit by a taxi.
328
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8