This document contains facts about various animals, including that an ancient shark was as heavy as 7 elephants, eagles can see 5 basic colors, lions roar can be heard up to 8 km away, tiger roars carry over 2 km, snakes sleep with their eyes open, fangtooth fish have teeth too big to close their mouth, and alligators can grow up to 20 feet long weighing half a ton. It also discusses deer being one of the most hunted animals in North America and that dogs can understand up to 250 words and perform basic math, while horses can sleep both standing up or lying down.