The Domestic Dog

Canis familiaris is one of the most famous mammals. This species is almost everywhere except Antarctica, but Antarctica has different varieties on each continent. However, due to this kind of wide distribution, little is known about its actual source. Scientists were able to track the line through fossil records and genetic data. But I am not convinced how old this species is, and even this dog might have started. So, humans are not familiar with "best friends of mankind" as many other species.

However despite much effort in the study of evolution of dogs, several different geographical areas as suggested birthplaces for domestic dogs, and divergence days between wolf's presumed dogs. 3 2000 and 10,000 years ago. Varieties include dogs from Central Asia (Afghan hounds) and North Africa (Slao), Europe (8 different varieties), North Pole and Siberia (Greenlander, Alaska Malamute, Samoyed, Siberian Husky and Eastern Siberian Lycra) The world (Chihuahuas, Mexico and Peruvian nude dogs) and the Tibetan Plateau (Tibet). Please select these dogs to cover as many major geographical areas as possible

Dogs have been kept selectively for various behaviors, sensory abilities, and physical characteristics for thousands of years. Modern varieties show more variation in size, appearance and behavior than other livestock. Dogs are predators and catchers, like many other predator mammals, have strong muscles, carpal fusion, cardiovascular systems that support splints and endurance, and have teeth to capture and tear It is. The height and weight of a dog are very different. The smallest adult dog known is the Yorkshire Terrier, with a shoulder of only 6.3 cm (2.5 inch), a head and body length of 9.5 cm (3.7 in), and a weight of only 4.0 g (113 ounces). The biggest known dog is the English mastiff, which is 155.6 kg (343 lbs) from the nose to the tail, 98 cm (250 cm). The tallest dog is the Great Dane, with a shoulder height of 42.0 inches.