Early American humans hunted car-size armadillos and used their shells for houses.
12
Travis was a chimpanzee who socialized with humans since birth. He could log onto a computer to look at pictures, watch TV using a remote control, brush his teeth, feed hay to his owner's horses, water plants, and learned the schedule of passing ice cream trucks.
11
The most expensive cow in the world was sold in 2009 for $1.2 million.
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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
Squirrels forget where they hide about half of their nuts.
698
Sharks, like other fish, have their reproductive organs in their chests.
248
There's a rare breed of pig that looks like a sheep.
14