TheJack Russell Terrier is a small terrier that has its origins in fox hunting in England. It is principally white-bodied and smooth, rough or broken-coated and can be any colour. Small tan and white terriers that technically belong to other breeds are sometimes known erroneously as Jack Russells. ParsonRussell Terrier. As with many terriers, Parson Russell Terriers were first bred to pursue fox hunting, and so, while strong, this breed is also nimble and agile. They have two varying coat types, smooth and broken, with the smooth one being shorter than the broken one. Like standard JRTs, they can become aggressive when left alone or Theycan be very aggressive with other dogs (not just other terriers), and in certain cases, more than two terriers shouldn't be kept together unattended. _The Making of the Parson Jack Russell Terrier_ written by Jean & Frank Jackson and published in England. The JRTCA has a bi-monthly newsletter called "True Grit." It has JackRussell/Parson Russell Terriers come in two coat types: smooth and broken. The main difference between the two is the length of the topcoat and the absence or presence of furnishings: the long hair on the extremities. One type of Jack Russell is longer than he is tall, standing only 10 to 12 inches at the shoulder. controversyexisted in the ranks of the terrier fanciers over a type of terrier called somewhat vaguely ‘the Jack Russell’. Applications were received by the Kennel Club from a considerable number of devotees of a strain of Fox Terriers bred by a Victorian hunting parson, the Reverend John Russell. Eventually this robust and Likesto play with kids but is not especially tolerant and will not stand teasing; if irritated, they will nip. Children should be taught not to tease the dog. Reserved with strangers. May TheJack Russell Terrier has a confusing name. Though many people can easily identify the appearance of a Jack Russell Terrier, few realize that when it comes to the name of this little white dog, there is plenty of confusion.Today, there are three breeds that are similar in appearance but that all take different names: the Parson Russell Terrier, the Russell In2003, they changed their mind and included the Jack Russell Terrier in the Parson Russell Terrier category. The Shorty Jack has its own category called the Russell Terrier, recognized in 2012. This doesn’t mean all Short Legged Jack Russells are aggressive. Genes predispose but do not doom a dog to be aggressive. wt2N2K.