The ancestor of all domestic cats is the African Wild Cat which still exists today.
12
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
Lobsters have blue blood.
476
Only 3% of bird species have penises.
0
Cows can sleep standing up, but they can only dream lying down.
745
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
Early American humans hunted car-size armadillos and used their shells for houses.
12