Subspecies of the tiger include the Sumatran Tiger, Siberian Tiger, Bengal Tiger, South China Tiger, Malayan Tiger and Indochinese Tiger.

The blue whale has the largest penis of any animal, typically measuring between 8 and 10 feet long with a girth from 12 to 14 inches. Its testes weigh between 100-150 pounds and can ejaculate over 35 pints.

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.

AMAZING FACTS