Here are 15 of the largest animals in North America, where you'll find them, and anything else you need to know about them. Not all of them are land animals, either. You may be surprised at some ...

Not cute and endearing like present-day sloths in South America, these sloths were one of the strangest animals of the ice age. They weighed as much, or more, than the short-faced bear at 1 tonne ...