Dogs have been domesticated by Man for thousands of years. There are hundreds of breeds of dogs.
Some dog breeds are small like Boxers and Terriers. Other breeds of dogs are large, such as Saint Bernards
and German Shepards. Dogs of this size can weigh a hundred pounds or more. Besides just being pets, many
dogs earn their living doing tasks such as pulling sleds, sheparding sheep, and retrieving game fowl on hunts.