The Border Jack is a hybrid dog which is bred by crossing a Border Collie with a Jack Russell Terrier. As a hybrid dog the Border Jack will inherit the physical and behavioral traits of both the Border Collie and Jack Russell Terrier dog breeds. However, not all Border Jacks will inherit the same characteristics (even if from the same litter). It is recommended to familiarize yourself with both the Jack Russell Terrier and the Border Collie if you are planning on adopting a Border Jack as the breed can have more characteristics of one parent breed than the other.
The Border Jack is a courageous, intelligent, and hyper-active breed. It will require an active owner willing to give it exercise daily. This breed has a hunting temperament and will sometimes display aggression towards other dogs or small animals, but hardly ever to humans. It participates in a wide variety of activities including agility, hunting, guarding, and tracking. The Border Jack is a demanding dog but will bring a loyal and playful spirit to the household.