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
Gorillas can catch human colds and other illnesses.
205
Tigers, leopards, and jaguars love "Calvin Klein's Obsession for Men". The scent is used to attract animals to cameras in the wilderness, and was even a turn on for one pair of Jaguars who were subject to it.
17
Honeypot ants are a unique insect that use their own bodies as living storage pots of honey.
4
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12
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
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
Penguins have a gland above their eye that turns saltwater into freshwater.
12