Condoms were originally made of animal intestines or linen.
347
Bats sleep 18-20 hours per day.
5
A scorpion can hold its breath for up to 6 days.
19
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
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
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8