Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
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
When dragonflies mate, their tails form a love heart.
22
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Female kangaroos have three vaginas.
2