The domestic dog is a member of the genus Canis, which forms part of the wolf-like canids, and is the most widely abundant terrestrial carnivore - that is, it is the most populated carnivore on land.
Dogs have a gestation period of 58 to 68 days, they have a life span of about 10 to 13 years. Research also says that dogs sleep for about 10 to 14 hours daily.
As regards to the breeds of dogs however, the World Canine Organization is best known by its French title Fédération Cynologique Internationale which is abbreviated FCI. It is the largest registry of dog breeds that is internationally accepted. As at may 2013, the FCI recognizes 339 breeds of dogs which are divided into 10 groups based upon the dog’s purpose or function or upon its appearance or size. The 10 groups are:
Sheepdogs and Cattle Dogs other than Swiss Cattle Dogs (this group includes most of the dogs found classified as "herding dogs" by other kennel clubs).
Pinscher and Schnauzer - Molossoid Breeds - Swiss Mountain and Cattle Dogs and Other Breeds (the Molossian breeds include the dogs known as the mastiffs by most other kennel clubs)
Terriers
Dachshunds
Spitz and Primitive Types
Scenthounds and Related Breeds
Pointers and Setters
Retrievers - Flushing Dogs - Water Dogs
Companion and Toy Dogs
Sighthounds
I earlier promised to post more facts about dogs. Consider this part of the fulfillment to that promise. Have a great day steemians.