In 1949, an official boxing match between a bear and a man was held. The bear won.
41
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
The Basenji dog is the only dog that is not able to bark.
4
Vanilla flavoring is sometimes made with an ingredient from beaver pee.
82
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20