Early American humans hunted car-size armadillos and used their shells for houses.
12
Sloths take two weeks to digest their food.
243
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17
An average cat has 1-8 kittens per litter and can have 2-3 litters per year. During her productive life, one female cat could have more than 100 kittens. A single pair of cats and their kittens can produce as many as 420,000 kittens in just 7 years.
10
Parrot parents "name" their children with a signature call.
112
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
When a male honey bee climaxes during sex, his testicles explode and then he dies.
27