North America ... one of the most incredible animals you can find in Glacier National Park. Grizzly bears usually weigh up to 1,000 pounds. They can grow up to 6.5 feet in length and are usually ...

When a giant fossilized claw was discovered in West Virginia in the late 1700s, there was great excitement over what extinct animal it ... that evolved in North America 3.5 million years ago.

These charismatic, rabbit-size rodents live on North America's prairies and open grasslands ... They also feature listening posts near exits, so animals can safely keep tabs on the movements ...