The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
Gorillas can catch human colds and other illnesses.
205
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
16
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
9
Honeypot ants are a unique insect that use their own bodies as living storage pots of honey.
4