Baby bears are born in the winter and stay inside their dens until spring. Every time a cub finishes nursing, the mom licks its bottom to make it urinate. The mother bear then drinks the urine, which helps keep the den clean.

The clown fish has the ability to change its sex. If a breeding female dies, the male fish will change its sex and mate with another male.

Swiss engineer George de Mestral, who got the idea after noticing burrs were sticking to his pants after his regular walks through the woods, invented Velcro.

AMAZING FACTS