Chinese Chongqing Dog

The Chinese Chongqing Dog is a rare breed of dog native to the Chongqing city of China, somewhat like a bulldog-Thai ridgeback mix (not, however, descended from either of these) but with a distinct tail, color, and coat. In its early years, it was used for hunting wild boar and rabbits, but it's now used in China to protect families and belongings. They are an ancient, natural breed said to have existed for 2,000 years since the time of the Han Dynasty in Ancient China. After the establishment of the People's Republic of China in 1949, the breed's numbers were greatly reduced, and only people in rural communities still kept it; the breed is still rare, even in China.
The Chongqing dog may be protective of its family and owners, but if a stranger to the dog is kind and the owner is present, the dog will grow to respect it. They are usually a good family companion. However, these dogs are said to be wary of unknown strangers, and if it senses fear, it will prepare for action and attack if any false moves or suspicious actions are made.

Males are usually 16-19 and a half inches (40-50 cm) tall and females are from 14 to 16 inches (35-40 cm). Males weigh from 44-54 pounds (20-25 kilograms) and females are 33-44 pounds (15-20 kilograms).

No known major health problems occur in this breed, because there has been no inbreeding. However, because of the thin coat, some individual dogs develop skin problems. The life expectancy is 18 years for both males and females. No specific grooming is required, as this is a short-haired breed not shown.

source : wikipedia