In temperament the Mountain Cur is determined and alert. It is close to its own family, protective of it and wary of strangers. It can be assertive with other dogs.
The breed is stocky and muscular, with a broad head, a deep chest and a short, dense coat in yellow, black, brindle or blue, sometimes with white markings. Some are born with a naturally short tail.
The Mountain Cur is generally thought to descend from the mixed dogs that European settlers brought into the southern Appalachians, bred over generations for work rather than looks. Its numbers are said to have fallen sharply after the Second World War, when many families left mountain farms for work in towns and factories and the dogs lost their place. Breeders who had kept the old working lines organised to preserve them, and the United Kennel Club recognised the breed in the late nineteen-nineties. It remains a hunting dog first. It is used on squirrel, raccoon and other treeing game, and as a bay dog on wild hogs. Many trail with little noise and give voice once the animal is treed or cornered.