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 lack of numbers and political isolation of the country at the time caused the creation of a new breed quite distinct from the former English style toy dog as breeders sought to stabilise the remaining toy sized terriers into a standard breed. The resulting contemporary Russian Toy has most of the features of the classic toy terrier, with the addition of some new characteristics. The head is high but not wide, the cheeks are flat and the eyes are round. By 1960, 76 dogs were entered into an exhibition and the first standard for the two Russian Toy varieties was