Black Mouth Curs are primarily herding dogs able to hunt big or small game, but they are also suitable as family dogs. The breed has an average litter size of 3-12, and a lifespan of 12–18 years. A disqualification is albinism.The muzzle is square-shaped. It may have a melanistic mask, which is most often black. Maskless dogs are allowed but not preferred. Pads are large, tough, and well cushioned. Toes may be webbed. Single or double dewclaws may be present.The adult weight ranges depending on the line, from 25 pounds minimum for tree dogs (i.e. Ladner BMCs) to over 100 pounds for herding or hog dogs (i.e.