Thetemperament section of the standard describes the Parson Russell as, “Bold and friendly. Athletic and clever. At work he is a game hunter, tenacious, courageous, and single minded.”. A reluctant, shy, or frightened Parson cannot do the job they were bred to do. Shyness, defined in the standard as a fault, must not be confused with Heres the best plan for treating territorial aggression in dogs, as recommended by animal behaviorists. “I just adopted a West Highland White Terrier mix from a rescue organization. My ParsonRussell Terriers that are not socialized or become startled may nip at younger children or knock them over in excitement, but are unlikely to be aggressive TheParson Russell Terrier is a very alert breed that needs appropriate activity. As they tend to be dominating, consistent training will help to create clear conditions. Otherwise they constantly question the rules and enforce their own head. It is also important to bring the animal into contact with other dogs at a young age in a puppy school. TheJack Russell Terrier Breeders Association (JRTBA) - now the JRTAA - in the U.S. follows the Parson JRT Club in England, and their goals and objectives are clearly in conflict with those of the JRTCA. This organization promotes kennel club recognition of the Jack Russell. Members of the JRTBA/JRTAA are refused membership in the JRTCA. JackRussells are generally very ‘barky’ or reactive dogs. If they haven’t been socialised as pups, they may display aggression (particularly leash aggression) towards other dogs. This can make walks stressful especially when you witness a ‘slanging match’ between your dog and any other dog that passes on the opposite side of the street! BothJack Russell Terriers and Parson Russell Terriers are small-sized dogs, making them a good option for home pets. However, they have distinct character traits that make each a better choice under certain situations. Jack Russell Terriers are smaller and more aggressive than Parson Russell Terriers. TheJack Russell Terrier, Parson Russell Terrier, and Russell Terrier are indeed different, but three very closely related terrier breeds that share many similarities, with distinctive differences noticeable in their height and size. Are Terriers Aggressive: Understanding Their Personalities and Traits. Hand Stripping a Terrier: What First ParsonRussell Terrier: Jack Russell Terrier: Russell Terrier: Average size (adult) 13-14 inches: 10-15 inches: 10-12 inches: Average weight (adult) 13-17 pounds: The Jack Russell Terrier can also be aggressive toward other dogs, even those much bigger than them. When it comes to training this breed, they are intelligent but not ThePRT was developed by Parson John Russel (known as Jack to his close friends) sometimes in the early 1800s. They will bark when someone is at the door, though they will welcome strangers into the home and are almost never aggressive towards humans. They are Terriers and have a natural instinct to hunt small, furry animals - so the family kaNmD.