There are a great many puppies for sale in Massachusetts that are waiting to become your friend. Although often times, people buy dogs for more than friendship reasons, which often depends on where they live. Sometimes people buy dogs for specific reasons such as sporting, contests, shows, and guarding. Guard dogs can be very important if you live in a rough neighborhood or if you have valuable items. Criminals usually tend to stray away from houses and places that are guarded by dogs. Guard dogs are very loyal to their masters and can become well trained.