Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
Condoms were originally made of animal intestines or linen.
347
Female kangaroos have three vaginas.
2
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40
Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
There are approximately three chickens for every human on Earth.
13
Cats and dogs can hear ultrasound.
350