The Jack Russell Terrier was developed by the Reverend John Russell in nineteenth-century Devon, England, to keep up with foxhounds and bolt foxes from their dens. Today's dogs are compact and mostly white, roughly 10 to 15 inches tall and 13 to 18 pounds, with black or tan markings and smooth, broken or rough coats. The taller show type is registered in the United States as the Parson Russell Terrier.
In Columbia, that history shows up as a dog that digs, climbs and chases squirrels across a backyard. Many Jack Russells are bold, clever and funny, with a strong prey drive and little interest in lounging. They do well with people who enjoy training and outdoor time, though each dog varies. Plan on vigorous daily exercise, puzzles and firm, positive boundaries.