There are approximately three chickens for every human on Earth.
13
Early American humans hunted car-size armadillos and used their shells for houses.
12
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
The Basenji dog is the only dog that is not able to bark.
4
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19