Friedrich August Kekulé discovered the ring-shaped structure of the organic chemical compound benzene while daydreaming about the famous circular symbol of a snake eating its own tail.

The stegosaurus, a giant dinosaur that grew to more than 18 feet long and was armed with enormous bony plates on its neck, back, and tail, has a brain that weighed only 2 onces and was no bigger than a walnut.

The cheetah has a long, muscular tail that has a flat shape. The tail almost functions like a rudder on a boat because they use it to help control their steering and keep their balance when running very fast.

Cheetah cubs have long tall hair that runs from their neck all the way down to the base of their tail, which is called the mantle. The mantle makes a cheetah cub look like a honey badger and makes them blend into tall grass, which helps keep them safe from threats like lions and hyenas.