Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Vanilla flavoring is sometimes made with an ingredient from beaver pee.
82
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
Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
Camels and llamas can cross breed. The offspring is called a ‘Cama’.
10