The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
Only 3% of bird species have penises.
0
Female kangaroos have three vaginas.
2
15% of snails survive digestion by birds and are found alive in their droppings, potentially leading to the spread of snail populations.
1
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
A giraffe's kick is so powerful that it can decapitate a lion.
216
The colossal squid has the largest eyes in the world.
4