The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
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
In 2005, in Africa, it was reported that three lions rescued a 12-year-old girl from kidnappers and guarded her for half a day until help came.
46
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
The octopus does not have a blind spot.
273