The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
Vanilla flavoring is sometimes made with an ingredient from beaver pee.
82
There's a young hippo and a 130+ year old tortoise in a Kenyan wildlife preserve who are best friends and they even sleep and play together.
40
Honeypot ants are a unique insect that use their own bodies as living storage pots of honey.
4
In 1918, a homing pigeon saved over 190 American soldiers by delivering a message to nearby support despite having been shot through the breast, blinded in one eye, covered in blood, and with a leg hanging on by just a tendon.
22
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9
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 banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
17