When it comes to the animal kingdom, anything goes, it seems. From sounds heard miles away to spontaneous sex changes, these little-known facts were probably not discussed in that high school biology class you took.
This big boy hails from the Galapagos Island. He is a Galapagos tortoise, and he can expect to enjoy a lifespan of over 150 years. Not bad for a tortoise that can good without food or water for a complete year, and who sleeps 16 hours a day. Why live for 150 years if you're going to spend 75% of it sleeping?