Dogs have been bred for desired behaviors, sensory capabilities, and physical attributes. Dog breeds vary widely in shape, size, and color. They have the same number of bones (with the exception of the tail), powerful jaws that house around 42 teeth, and well-developed senses of smell, hearing, and sight. Compared to humans, dogs possess a superior sense of smell and hearing, but inferior visual acuity. Dogs perform many roles for humans, such as hunting, herding, pulling loads, protection, companionship, therapy, aiding disabled people, and assisting police and the military.
Communication in dogs includes eye gaze, facial expression, vocalization, body posture (including movements of bodies and limbs), and gustatory communication (scents, pheromones, and taste). They mark their territories by urinating on them, which is more likely when entering a new environment. Over the millennia, dogs have uniquely adapted to human behavior; this adaptation includes being able to understand and communicate with humans. As such, the human–canine bond has been a topic of frequent study, and dogs' influence on human society has given them the sobriquet of "man's best friend". (Full article...)
The Beagle is a small breed of scent hound, similar in appearance to the much larger foxhound. The beagle was developed primarily for hunting rabbit or 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 amiable temperament.
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. Beagles have been depicted in popular culture since Elizabethan times in literature and paintings and more recently in film, television, and comic books. (Full article...)
A Border Collie herding sheep. Border Collies can take direction by voice and whistle at long distances when herding. Their great energy and herding instinct are still used to herd all kinds of animals, from the traditional sheep and cattle, free range poultry, and pigs, to deer and ostriches. They are also used to remove unwanted wild birds from airport runways, golf courses, and other public and private areas.
The Polynesian Dog refers to a few extinct varieties of domesticated dogs from the islands of Polynesia. These dogs were used for both companionship and food and were introduced alongside poultry and pigs to various islands. They became extinct as a result of the crossbreeding that occurred after European breeds of dogs were introduced. Modern studies done on the DNA of the Polynesian dogs indicate that they descended from the domesticated dogs of Southeast Asia and may have shared a remote ancestor with the dingo. (Full article...)
The following are images from various dog-related articles on Wikipedia.
Image 1A 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 30The 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 35"Five different types of dogs", c. 1547. (from Dog breed)
Image 36Schematic 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)
... 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 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?
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