Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
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
There's a rare breed of pig that looks like a sheep.
14
The most expensive cow in the world was sold in 2009 for $1.2 million.
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