The Parson is bold, lively and friendly, quick to learn but independent-minded. It has considerable stamina and keeps at a task once it has found something to chase or dig for.
It is balanced and roughly square, with fairly long legs, a narrow, flexible chest that can be spanned by hand behind the shoulders, and a strong, moderately high-set tail. The coat is smooth or broken, dense and weatherproof, and entirely or mainly white, often with tan, lemon or black markings, preferably on the head and tail root. White is said to have helped hunters tell the terrier from the fox.
The Parson Russell Terrier took shape in the West Country, where John Russell bred working terriers for much of the nineteenth century. Although he was a founder member of The Kennel Club and judged fox terriers at early shows, he kept his own dogs to a hunting type while the show fox terrier drifted away from it. After his death, local enthusiasts such as Arthur Heinemann kept the working strain going. Today most kennel clubs distinguish the breed from the shorter-legged Jack Russell Terrier. It was bred to bolt foxes from their earths for the hunt rather than to kill below ground.