This diagram depicts different dog breeds in the form of a bubble map. It shows a total of seventeen popular species. They range from your typical toy dogs to guard dogs and industrious dogs that work with humans in different fields. The dog has been a man's companion since the days when the man used to dwell in caves. The cave paintings show dog or dog-like creatures with human figures. It shows the bond of dogs with the man goes back to primitive times and shows no signs of abating. It is still a trustworthy friend of millions of dog lovers around the world. Its loyalty, selfless love, intelligence, and courage have endeared humans, and humans love to pet one.