The bobtail dog breed is actually the nickname for the Old English sheepdog, according to the American Kennel Club. Beginning in the 19th century, owners of this herding breed docked the dog’s tail close to the body as visible proof of the dog’s working status, making the owner exempt from taxes, hence the name bobtail.
The Old English sheepdog is intelligent and affectionate. The American Kennel Club recognized this sheep and cattle herding breed in 1888. These dogs are full of energy and need daily exercise. Their muscular bodies and athleticism makes them successful in agility, obedience and herding competitions. The Old English sheepdog features a long coat of gray or blue merle fur and stands 21 inches or more at the withers.