The Russell and Parson Russell terriers share a common heritage as fox-working dogs from the kennels of Rev. John “The Sporting Parson” Russell of the mid-1800s. Since the parson’s day, the lines of the two terriers have diverged and are now recognized as two distinctly separate breeds. Russells were bred to be swift enough to run with the hounds and tough but compact enough to go to ground and bolt prey.