The Basenji dog is the only dog that is not able to bark.
4
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
Cat families usually play best in even numbers. Cats and kittens should be acquired in pairs whenever possible!
156
Whales and dolphins can't taste anything other than salt.
11
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
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