The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
Rattlesnake mating sessions have been known to last more than 22 hours.
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A lion in the wild usually makes no more than twenty kills a year.
186
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8
There's a rare breed of pig that looks like a sheep.
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.
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