The question must be referring to Greyfriars Bobby. However, some historians are recently doubting that the story of Greyfrairs Bobby may have only been created to attract tourist to Edinburgh, the capital of Scotland where Greyfrairs Bobby lived.
See the related link regarding the accuracy of Greyfriars Bobby's tale.
It's the true story of a loyal Skye Terrier who remained by his master's grave for fourteen years.
It has been guarded since 1937, 73 years.
The life span of a Bedlington Terrier is 12 - 14 years.
8 is middle aged for a Boston. They typically live to be 12-14 years old. Dont be surprised to see some grey hairs, but your dog is by no means 1 paw in the grave.
The life span of an Australian Terrier is 12 - 14 years.
The life span of a Scottish Terrier is 11 to 13 years.
The average lifespan of a Norwich Terrier is between 12 and 14 years.
The average max. life expectancy of a Cesky Terrier is 14 years.
The life span of a Glen of Imaal Terrier is 10 - 14 years.
The life span of a Standard Manchester Terrier is 15 - 16 years.
The life span of a Toy Fox Terrier is 13 - 14 years.
About 14 years.