The Jack Russell Terrier breed was founded in the mid-1800’s in Devonshire, England by a clergyman named Parson John (Jack) Russell. Like many of his countrymen, the Reverend Russell had a passion for fox hunting. The Jack Russell Terrier was originally bred not to kill the fox, but to cause it to run from Long-coated Jack Russell Terriers are slightly longer than they are tall at 18 to 22 inches. No matter what type of coat one may have, they can all grow to a height of 10 to 15 inches when fully grown. All Jack Russell Terriers are proportionally longer than they are tall. Once fully grown, Jack Russell Terriers can weigh 14 to 18 pounds on The new club stated as its aim the promotion of the “genuine Jack Russell”. The Breed was formally recognised by The Kennel Club in 1990 as the Parson Jack Russell Terrier. However, in 1999, the breed name was changed to the Parson Russell Terrier to differentiate the two breeds. The Parson Russell is now well established in the show ring Jack Russell Terrier Breed Info. The Jack Russell terrier is a strong, agile, active working terrier with great personality. Its name implies a size of 10 to 15 inches (25 to 38 cm) at the withers; it is mainly white-bodied with smooth, rough or broken hair. There are two versions of Jack Russell’s – the Parson Russell terrier with a 11-15 years. The average lifespan of Whippet: 13 years. 13-15 years. The average lifespan of Parson Russell Terrier: 14 years. Calculate dog years to human years by breed here. Weather and Climate. The Parson Jack Russell Terrier was officially recognised by the Kennel Club in January 1990 after much hard work by the then committee of this club, which was reformed in the early 1980s. In August 1999 "Jack" was dropped from both the official breed title with the Kennel Club and the name of the club. The breed gained CC status in 1997 and The term Parson was added to distinguish the traditional long-legged terrier. In 2003, the AKC-recognized dogs had their names changed from Jack Russell Terrier to Parson Russell Terrier. The Parson Russell Terrier has become a popular media dog, and their exposure caused great interest in the breed. As a result, their numbers grew. Parson vs Jack Russell vs Russell Terrier: What’s the Difference? Visual Differences. A Quick Glance. Parson Russell Terrier. The Parson Russell Terrier was first developed in England sometime in the 1800s. As with most Jack Russell Terrier. Historically, the Parson Russell Terrier and Jack yopVtWO.