Portal:Dogs

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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 was domesticated from an extinct population of wolves during the Late Pleistocene, over 14,000 years ago by hunter-gatherers, prior to the development of agriculture. The dog was the first species to be domesticated by humans. Experts estimate that 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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The Czechoslovakian Wolfdog (Czech: Československý vlčák, Slovak: Československý vlčiak, ‹See Tfd›German: Tschechoslowakischer Wolfhund) is a breed of wolfdog that began as an experiment conducted in Czechoslovakia in 1955. The breed was known as Czech Wolfdog (Czech: Český vlčák, Slovak: Český vlčiak) until 1982.

After initially breeding working line German Shepherds with Carpathian grey wolves, a plan was worked out to create a breed that would have the temperament, pack mentality, and trainability of the German Shepherd and the strength, physical build and stamina of the Carpathian wolf. The breed were originally used as Border patrol dogs but were later also used in search and rescue, Schutzhund sport, tracking, herding, agility, obedience, hunting, and drafting in Europe and the United States. (Full article...)

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Purebred dogs, such as these Airedale Terriers, may participates in conformation dog shows with its owner or handler. Dog shows (and the related sport of Junior Handling for children and young people) are a popular activity; a single show, the 2006 Crufts dog show alone had 143,000 spectators, with 24,640 purebred dogs entered, representing 178 different breeds from 35 different countries.

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A detection dog or sniffer dog is a dog that is trained to use its senses to detect substances such as explosives, illegal drugs, wildlife scat, currency, blood, and contraband electronics such as illicit mobile phones. The sense most used by detection dogs is smell. Hunting dogs that search for game, and search and rescue dogs that work to find missing humans are generally not considered detection dogs but fit instead under their own categories. There is some overlap, as in the case of cadaver dogs, trained to search for human remains.

A police dog is essentially a detection dog that is used as a resource for police in specific scenarios such as conducting drug raids, finding missing criminals, and locating stashed currency. Frequently, detection dogs are thought to be used for law enforcement purposes. Experts say that dog-sniff evidence should not be used in the criminal justice system, pointing to wrongful convictions, human biases that skew animal behavior, and the lack of systematic research into what dogs detect or how they do it. (Full article...)

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

Image 1A mongrel puppy (from Puppy)
Image 2Lateral view of a dog skull, jaw closed (from Dog anatomy)
Image 3Schematic 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 4Reduction in size under selective breeding – grey wolf and chihuahua skulls (from Domestication of the dog)
Image 5Sled dog types, sketched in 1833 (from Dog breed)
Image 6Cave wolf skull, Natural History Museum, Berlin (from Domestication of the dog)
Image 7Cavapoo puppy (from Puppy)
Image 8Newborn Basenji puppies (from Puppy)
Image 9"Five different types of dogs", c. 1547. (from Dog breed)
Image 10Sled dogs, 1833 (from Dog type)
Image 11Diagram of a wolf skull with key features labelled (from Domestication of the dog)
Image 12Montage showing the coat variation of dogs. (from Dog anatomy)
Image 13Basset Hound (from Puppy)
Image 14Lateral view of a dog skeleton (from Dog anatomy)
Image 15President Lyndon B. Johnson with a basket of puppies in 1966 (from Puppy)
Image 16A labradoodle puppy and a Golden Retriever puppy playing together (from Puppy)
Image 17An extinct Turnspit dog, 1800 (from Dog type)
Image 18West Highland White Terrier puppies (from Puppy)
Image 19Lateral view of a dog skull, jaw opened (from Dog anatomy)
Image 20Scent-rolling (from Dog behavior)
Image 21Bloodhound puppy (from Puppy)
Image 22The 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 23Jack Russell Terrier puppy (from Puppy)
Image 24NASA astronaut Leland D. Melvin with his dogs Jake and Scout (from Dog behavior)
Image 25A dog's teeth (from Dog anatomy)
Image 26Watercolor 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 27Dog knee (from Dog anatomy)
Image 28Example of a dog making prolonged eye contact with a human (from Domestication of the dog)
Image 29A little mongrel puppy on the shore, on Halong Bay (from Puppy)
Image 30Sled dog types, sketched in 1833 (from Domestication of the dog)
Image 31The nose of a dog (from Dog anatomy)
Image 32Ancient Hawaiian petroglyphic depiction of an ʻīlio (Hawaiian Poi Dog) (from Domestication of the dog)
Image 33Skeleton 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 34External 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 35Chihuahua mix and purebred Great Dane (from Dog breed)
Image 36Australian Cattle Dog puppy (from Puppy)
Image 37German Spitz puppy (from Puppy)
Image 38Tesem, an ancient Egyptian sight-hound (from Dog breed)
Image 39Petroglyph depicting two dogs hunting – Tassili n'Ajjer, Algeria (from Domestication of the dog)
Image 40Map depicting possible phylogeographic origins of dingoes, New Guinea singing dogs, and Island Southeast Asian and Oceanian dogs, based on recent genetic evidence (Fillios & Taçon, 2016) (from Domestication of the dog)
Image 41A cavapoo and maltipoo running back while playing fetch (from Dog behavior)
Image 42Golden Retriever puppy (from Puppy)
Image 43A wolf mandible diagram showing the names and positions of the teeth (from Dog anatomy)
Image 44Two Shih Tzu puppies (from Puppy)
Image 45The dog's retina shows the optic disc and the eye's vasculature. (from Dog anatomy)
Image 46Basenji puppy (from Puppy)
Image 47The 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 48St. Bernard puppy (from Puppy)
Image 49Newborn Welsh Springer Spaniels (from Puppy)
Image 50Montage showing the morphological variation of the dog. (from Dog breed)
Image 51The 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 52Mammoth bone dwelling, Mezhirich site, Ukraine (from Domestication of the dog)
Image 53Frontal view of a dog skull (from Dog anatomy)
Image 54Cart dogs, c. 1900; different in appearance but doing the same work (from Dog type)
Image 55A 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 56Chihuahua puppy (from Puppy)
Image 57Mandible of the oldest recognised dog discovered in Bonn-Oberkassel, Germany, and dated 14,200 years old (from Domestication of the dog)
Image 58Puggle puppy (from Puppy)
Image 59The 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 60Bison surrounded by grey wolf pack (from Domestication of the dog)
Image 61An 1897 illustration showing a range of European dog breeds (from Dog breed)
Image 62A dog's whiskers (from Dog anatomy)

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

... that the Key Underwood Coon Dog Memorial Graveyard is the only U.S. cemetery reserved exclusively for coon dog burials?
... that after U.S. Navy pilot Royce Williams engaged in a solo dogfight with seven Soviet MiG-15s during the Korean War, he was ordered never to tell anyone about it?
... that Ethan Loch, a blind pianist, was inspired by Rowlf the Dog?
... that according to legend, dogs who travelled through a passage between Piper's Hole in Tresco and Piper's Hole in St Mary's emerged without most of their fur?
... that Ladoga Skerries National Park in Russia has more than 350 species of various liverworts, hornworts and mosses?
... that Lixia traditions include weighing people, brewing seven-family tea, and making rice dogs?

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...that Buster, the dog of British Labour politician Roy Hattersley, earned his owner a criminal record after killing a goose in St. James's Park, London?
...that the appearance of a dog in a Hutch ad campaign doubled sales of pugs in India in 2003?
...that Bamse was a St. Bernard dog that became the heroic mascot of the Free Norwegian Forces during the Second World War?

...that the original Rin Tin Tin was named for a puppet called Rintintin that French children gave to the American soldiers for good luck?
...that the Iditarod Trail Sled Dog Race in Alaska covers about 1,100 miles (1,760 km)?
...that the dog to win the first three Westminster Kennel Club Dog Shows was a Smooth Fox Terrier named Warren Remedy?
...that the Fédération Cynologique Internationale (World Canine Organization) was founded in 1911 and has 80 member countries?

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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...
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