Dog have died and half are still alive, ranges from 10 to 13 years. Individual dogs may live well beyond the median of their breed. The breed with the shortest lifespan (among breeds for which there is a questionnaire survey with a reasonable sample size) is the Dogue de Bordeaux, with a median longevity of about 5.2 years, but several breeds, including Miniature Bull Terriers, Bloodhounds, and Irish Wolfhounds are nearly as short-lived, with median longevities of 6 to 7 years. The longest-lived breeds, including Toy Poodles, Japanese Spitz, Border Terriers, and Tibetan Spaniels, have median longevities of 14 to 15
Russkiy Toy older of the two, with the long coat type first appearing in 1958. Until the 1990s, the breed was almost unknown outside of Russia, and so relatively few details on associated health issues are known. The Russian Toy was originally bred as a rat fighter and as a watchdog, and can still exhibit the vocalization expected from the latter. It is a friendly dog and can become very attached to the family unit. Due to its size and similarities to the chihuahua, the two are often compared. The Russian Toy is one of the smallest breeds in the world, measuring