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
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
Whales and dolphins can't taste anything other than salt.
11
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20