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The dog (Canis familiaris or Canis lupus familiaris) is a domesticated descendant of the wolf. Also called the domestic dog, it is derived from the extinct Pleistocene wolf; the gray wolf is the dog's closest living relative. The dog was the first species to be domesticated by humans. Experts estimate that hunter-gatherers domesticated dogs more than 15,000 years ago, which was before the development of agriculture. Due to their long association with humans, dogs have expanded to a large number of domestic individuals and gained the ability to thrive on a starch-rich diet that would be inadequate for other canids.

The dog has been selectively bred over millennia for various behaviors, sensory capabilities, and physical attributes. Dog breeds vary widely in shape, size, and color. They perform many roles for humans, such as hunting, herding, pulling loads, protection, assisting police and the military, companionship, therapy, and aiding disabled people. Over the millennia, dogs became uniquely adapted to human behavior, and the human–canine bond has been a topic of frequent study. This influence on human society has given them the sobriquet of "man's best friend". (Full article...)

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Tricolor Beagle

The beagle is a breed of small scent hound, similar in appearance to the much larger foxhound. The beagle was developed primarily for hunting hare, known as beagling. Possessing a great sense of smell and superior tracking instincts, the beagle is the primary breed used as a detection dog for prohibited agricultural imports and foodstuffs in quarantine around the world. The beagle is a popular pet due to its size and good temper.

The modern breed was developed in Great Britain around the 1830s from several breeds, including the Talbot Hound, the North Country Beagle, the Southern Hound, and possibly the Harrier. (Full article...)

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Credit: Herwig Kavallar

The Labrador Retriever ("Labrador" or "Lab" for short), is a retriever, and is the most popular breed of dog (by registered ownership) in the United States, Canada, and the United Kingdom. The breed is friendly, intelligent, energetic and good natured, making them excellent companions and working dogs. Labrador Retrievers are known to be one of the fastest-learning breeds of dog and respond well to praise and positive attention. The steady temperament of Labs and their ability to learn quickly make them an ideal breed for assistance dogs as well as search and rescue, detection, and therapy work.

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Canine distemper virus cytoplasmic inclusion body (blood smear, Wright's stain)

Canine distemper virus (CDV) (sometimes termed "footpad disease") is a viral disease that affects a wide variety of mammal families, including domestic and wild species of dogs, coyotes, foxes, pandas, wolves, ferrets, skunks, raccoons, and felines, as well as pinnipeds, some primates, and a variety of other species. CDV does not affect humans.

In canines, CDV affects several body systems, including the gastrointestinal and respiratory tracts, the spinal cord, and the brain. Common symptoms include high fever, eye inflammation and eye/nose discharge, labored breathing and coughing, vomiting and diarrhea, loss of appetite and lethargy, and hardening of the nose and footpads. The viral infection can be accompanied by secondary bacterial infections and can eventually present serious neurological symptoms. (Full article...)

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The following are images from various dog-related articles on Wikipedia.

Image 1Newborn Basenji puppies (from Puppy)
Image 2Cave wolf skull, Natural History Museum, Berlin (from Domestication of the dog)
Image 3An 1897 illustration showing a range of European dog breeds (from Dog breed)
Image 4Newborn Welsh Springer Spaniels (from Puppy)
Image 5Cart dogs, c. 1900; different in appearance but doing the same work (from Dog type)
Image 6"Five different types of dogs", c. 1547. (from Dog breed)
Image 7Puggle puppy (from Puppy)
Image 8Lateral view of a dog skeleton (from Dog anatomy)
Image 9The dog's retina shows the optic disc and the eye's vasculature. (from Dog anatomy)
Image 10Basset Hound (from Puppy)
Image 11NASA astronaut Leland D. Melvin with his dogs Jake and Scout (from Dog behavior)
Image 12The Greenland dog carries 3.5% genetic material inherited from a 35,000-year-old wolf from the Taymyr Peninsula, Arctic Siberia. (from Domestication of the dog)
Image 13Two Shih Tzu puppies (from Puppy)
Image 14Frontal view of a dog skull (from Dog anatomy)
Image 15A labradoodle puppy and a Golden Retriever puppy playing together. (from Puppy)
Image 16Skeleton of a dog:
1. Cranium
2. Maxilla
3. Mandible
4. Atlas
5. Axis
6. Scapula
7. Spine of scapula
8. Humerus
9. Radius
10. Ulna
11. Phalanges
12. Metacarpal bones
13. Carpal bones
14. Sternum
15. Cartilaginous part of the rib
16. Ribs
17. Phalanges
18. Metatarsal bones
19. Tarsal Bones
20. Calcaneus
21. Fibula
22. Tibia
23. Patella
24. Femur
25. Ischium
26. Pelvis
(from Dog anatomy)
Image 17A dog's whiskers (from Dog anatomy)
Image 18Watercolor tracing made by archaeologist Henri Breuil from a cave painting of a wolf-like canid, Font-de-Gaume, France, dated 19,000 years ago (from Domestication of the dog)
Image 19President Lyndon B. Johnson with a basket of puppies in 1966 (from Puppy)
Image 20Tesem, an ancient Egyptian sight-hound (from Dog breed)
Image 21Lateral view of a dog skull, jaw closed (from Dog anatomy)
Image 22The difference in body size between a Cane Corso (Italian mastiff) and a Yorkshire Terrier is over 30-fold; both are members of the same species. (from Dog anatomy)
Image 23The nose of a dog (from Dog anatomy)
Image 24Cavapoo puppy (from Puppy)
Image 25An extinct Turnspit dog, 1800 (from Dog type)
Image 26Montage showing the coat variation of dogs. (from Dog anatomy)
Image 27St. Bernard puppy (from Puppy)
Image 28Petroglyph depicting two dogs hunting – Tassili n'Ajjer, Algeria (from Domestication of the dog)
Image 29Basenji puppy (from Puppy)
Image 30Mammoth bone dwelling, Mezhirich site, Ukraine (from Domestication of the dog)
Image 31Sled dogs, 1833 (from Dog type)
Image 32External anatomy (topography) of a typical dog: 1. Head 2. Muzzle 3. Dewlap (throat, neck skin) 4. Shoulder 5. Elbow 6. Forefeet 7. Croup (rump) 8. Leg (thigh and hip) 9. Hock 10. Hind feet 11. Withers 12. Stifle 13. Paws 14. Tail (from Dog anatomy)
Image 33Example of a dog making prolonged eye contact with a human (from Domestication of the dog)
Image 34Bloodhound puppy (from Puppy)
Image 35Bison surrounded by grey wolf pack (from Domestication of the dog)
Image 36Jack Russell Terrier puppy (from Puppy)
Image 37Australian Cattle Dog puppy (from Puppy)
Image 38Schematic anatomy of the ear. In dogs, the ear canal has a "L" shape, with the vertical canal (first half) and the horizontal canal (deeper half, ending with the eardrum) (from Dog anatomy)
Image 39German Spitz puppy (from Puppy)
Image 40Golden Retriever puppy (from Puppy)
Image 41Diagram of a wolf skull with key features labelled (from Domestication of the dog)
Image 42Reduction in size under selective breeding – grey wolf and chihuahua skulls (from Domestication of the dog)
Image 43A little mongrel puppy on the shore, on Halong Bay (from Puppy)
Image 44A mongrel puppy (from Puppy)
Image 45Chihuahua mix and purebred Great Dane (from Dog breed)
Image 46A wolf mandible diagram showing the names and positions of the teeth (from Dog anatomy)
Image 47Sled dog types, sketched in 1833 (from Domestication of the dog)
Image 48A dog's teeth (from Dog anatomy)
Image 49Lateral view of a dog skull, jaw opened (from Dog anatomy)
Image 50The dog diverged from a now-extinct population of wolves 27,000–40,000 years ago immediately before the Last Glacial Maximum, when much of the mammoth steppe was cold and dry. (from Domestication of the dog)
Image 51Mandible of the oldest recognised dog discovered in Bonn-Oberkassel, Germany, and dated 14,200 years old (from Domestication of the dog)
Image 52Montage showing the morphological variation of the dog. (from Dog breed)
Image 53Scent-rolling (from Dog behavior)
Image 54The difference in overall body size between a Cane Corso (Italian mastiff) and a Yorkshire terrier is over 30-fold, yet both are members of the same species. (from Domestication of the dog)
Image 55Dog knee (from Dog anatomy)
Image 56Chihuahua puppy (from Puppy)
Image 57A drawing by Konrad Lorenz showing facial expressions of a dog - a communication behavior. X-axis is aggression, y-axis is fear. (from Dog behavior)
Image 58Sled dog types, sketched in 1833 (from Dog breed)
Image 59West Highland White Terrier puppies (from Puppy)

Did you know (auto-generated) - show different entries

... that a 19th-century horse stable in New York City later housed a luxury pet sitter for cats and dogs?
... that Lixia traditions include weighing people, brewing seven-family tea, and making rice dogs?
... that the 2021 NCAA Division I men's basketball championship game between Baylor and Gonzaga was the first since 2005 to feature the top two overall seeds of the NCAA tournament?
... that an initial gameplay concept for Diggin' Dogs was "possibly going to be worms eating into a diseased brain", with design input from Edmund McMillen?
... that Herbert James Gunn used a paper cut-out of Princess Elizabeth's corgi dog to help him paint his Conversation Piece at the Royal Lodge, Windsor?
... that after decades of being a central hub for river dredging operations, Stony Island's population was reduced to a caretaker and his two dogs?

More did you know... - show different entries

...that Mancs the Hungarian rescue dog is commemorated by a statue (pictured) in his hometown Miskolc?
...that the sting of the rainforest shrub Dendrocnide moroides can cause severe and prolonged pain and has been reported to kill dogs, horses and humans?
...that Dogs Trust, a British animal welfare charity, provided AA wardens with pistols to painlessly euthanise animals injured in road accidents?
...that according to legend, the relics of Saints Ferreolus and Ferrutio were discovered in 370 by a military tribune whose dog chased a fox into a cave near present-day Besançon, France?

...that Snuppy the Afghan Hound is the world's first cloned dog?
...that 217 Dalmatians were used in the filming of 101 Dalmatians?
...that former Canadian Prime Minister William Lyon Mackenzie King owned several Irish Terriers (all named Pat), and had séances to "communicate" with the dogs after their death?
...that the Labrador Retriever is the most popular dog breed in the USA, with the Yorkshire Terrier and German Shepherd Dog being second and third?

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Stubs : Aksaray Malaklisi, Alopekis, Argentine pila dog, Armant (dog), Banjara Hound, Barbado da Terceira, Braque Dupuy, Bruno Jura Hound, Bulgarian Scenthound, Cane Lupino del Gigante, Cane Paratore, Cantabrian Water Dog, Český fousek, Faroese Sheepdog, Georgian Shepherd, German Spitz Mittel, Gończy Polski, Grand Griffon Vendéen, Himalayan Sheepdog, Hygen Hound, Indian Spitz, Japanese Terrier, Kaikadi (dog), Koyun dog, Kumaon Mastiff, Levriero Italiano, Mahratta Hound, Majorca Ratter, Montenegrin Mountain Hound, Northern Inuit Dog, Phu Quoc Ridgeback, Plummer Terrier, Porcelaine, Pyrenean Mastiff, Rampur Greyhound, Romanian Mioritic Shepherd Dog, Romanian Raven Shepherd Dog, Sapsali, Sarabi dog, Sardinian Shepherd Dog, Schweizer Laufhund, Segugio Italiano, Segugio Maremmano, Segugio dell'Appennino, Sinhala Hound, Slovak Cuvac, South Russian Ovcharka, St. Hubert Jura Hound, Stichelhaar, Taigan, Tazy, Telomian, Treeing Cur, Vikhan Sheepdog, Villano de las Encartaciones, Villanuco de Las Encartaciones, White Shepherd, White Swiss Shepherd Dog, Xiasi Dog More stubs...
Other : Tag and assess "dog" articles with {{WikiProject Dogs}} banner. See also Dog breeds WikiProject to do list.

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This is a list of recognized content, updated weekly by JL-Bot (talk · contribs) (typically on Saturdays). There is no need to edit the list yourself. If an article is missing from the list, make sure it is tagged (e.g. {{WikiProject Dogs}}) or categorized correctly and wait for the next update. See WP:RECOG for configuration options.