Interesting Facts About Dogs. – There are more than 150 dog breeds, divided into 8 classes: sporting, hound, working, terrier, toy, non-sporting, herding, and miscellaneous. – According to a recent survey,

dog is one of the most popular pets in the world (of course cat lovers will argue for cats). Dogs have long played an important role in the lives of humans. It's thought that dogs have been pets for thousands