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
English Toy Terrier (Black & Tan) Tan Terrier until the 1920s when they were split into two breeds, the larger Manchester Terrier and the smaller Black and Tan Terrier (Miniature). The name English Toy Terrier (Black and Tan) was adopted in 1962. Black and Tan Terriers of all sizes were exported to Canada and the USA, founding a population which was largely isolated from the European one until very recently. In North America the two sizes were also split into two breeds until 1958 when declining numbers of the Standard Manchester Terrier prompted the American Kennel Club to re-defined them as a single breed with two