Bats sleep 18-20 hours per day.
5
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
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Mosquitoes don't just bite you, they also pee on you.
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The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8
Cows as they are today never existed in the wild and were domesticated from aurochs some 10,500 years ago.
6
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.
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