Historically these dogs date back to the 19th century where they were being bred to hunt foxes. A parson and hunting enthusiast named John Russell purchased a mainly white terrier with small tan markings that was the basis for a breeding program to develop a terrier with high stamina for the hunt, and the courage to chase out foxes who had gone to ground. These dogs were recognised as a distinct breed in the 1850s. Two varieties evolved from these original dogs, with their primary difference being their height and proportions. The taller and more squarely built dogs are now known as Parson Russell Terriers, and the shorter, slightly longer proportioned dogs are the Jack Russell Terriers.
Jack Russells have been popular as working dogs and pets for many years, but in the context of dog showing, the Jack Russell Terrier was only recognised as a pedigree breed by the UK Kennel Club in January 2016 following a campaign by a group of enthusiasts. Australia was the first country to recognise the breed for dog showing in the 1990s, and the world canine organisation (the FCI) definitively accepted the Australian breed standard for the Jack Russell Terrier in 2003. Although Australia is credited with the development of the breed for the show ring, the UK is widely recognised as the origin of the breed.
As a terrier with a strong instinct for hunting, they are feisty, playful, high energy dogs. They require training which is firm but loving, and are best suited to families with an active lifestyle so they can spend plenty of time outdoors. They excel in dog sports such as Agility and Flyball.