To function effectively as a working terrier, the Parson Russell Terrier must possess certain essential characteristics: a ready attitude, alertness, and confidence; a balanced height and length; and a medium size and bone structure that suggest strength and endurance. These traits are often discussed in educational seminars focused on the breed. An important aspect of the Parson Russell Terrier's breed type is its natural appearance, characterized by a harsh, weatherproof coat with a compact construction and clean silhouette. The coat can be either broken or smooth. The terrier features a small, flexible chest, enabling it to pursue quarry underground, along with sufficient leg length to keep up with hounds. Old scars and injuries, resulting from honorable work or accidents, should not adversely affect a terrier's chances in the show ring unless they interfere with movement or its utility for work or breeding.