What is the Difference Between Jack Russell and Parson Russell?

The Jack Russell Terrier and Parson Russell Terrier are both breeds of terriers that closely resemble each other, but they have some key differences:

1. Size and Proportions: The Parson Russell is generally larger than the Jack Russell. It measures 33 to 36 cm (13 to 14.5 in.) at the shoulders and weighs around 6 to 8 kg (13 to 17 lbs). In contrast, the Jack Russell is slightly longer than it is tall, with a shoulder height of 25 to 30 cm (10 to 12 in.) and a weight range of 4 to 7 kg (9 to 15 lbs).
2. Body Shape: The Parson Russell has a square-shaped body with a wider chest, while the Jack Russell has a rectangular body shape.
3. Head and Muzzle: The Parson Russell has a strong, rectangular muzzle, a larger head, and almond-shaped eyes with dark rims. The Jack Russell has a smaller, well-proportioned head.
4. Temperament: Parson Russells are generally not aggressive but have a dominant personality, while Jack Russells can be more aggressive, especially with other dogs and children.
5. Exercise Needs: Both breeds are active and energetic, but Jack Russells are often used as working dogs, while Parson Russells are bred for show purposes.
6. Registration: Parson Russells can be registered with the American Kennel Club (AKC), while Jack Russells are not.

Comparative Table: Jack Russell vs Parson Russell

The main differences between Jack Russell and Parson Russell terriers are their body sizes, shapes, weights, and lifespans. Here is a comparison table highlighting the key differences:

Both breeds were developed by Reverend John "Jack" Russell, who aimed to create a fox terrier strain that could hunt and work effectively. The Jack Russell is known for its superiority as a hunting companion, while the Parson Russell was bred to have longer legs for better pursuit of red foxes.