Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
The Basenji dog is the only dog that is not able to bark.
4
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
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
A group of kittens is called a "kindle".
10