Dogs Author:Seymour Simon It's easy to see why the dog is the most popular pet in the world. For a romp in the woods or a cozy snuggle, a dog is the perfect companion! Dogs are more than just loyal pets. — For thousands of years these amazing animals have helped us herd sheep, hunt for food, and keep warm. Join beloved science writer Seymour Simon as he takes a close phot... more »ographic look at the dog, our best friend.« less