Sloths take two weeks to digest their food.
243
Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402
Early American humans hunted car-size armadillos and used their shells for houses.
12
A zoo in China gave a gay penguin couple the opportunity to raise a chick.
11
Cats and dogs can hear ultrasound.
350