The Jack Russell Terrier is named for the Reverend John Russell, a nineteenth-century Devon parson who wanted white terriers that could keep up with hounds and bolt foxes from their dens. Jacks stand about 10 to 15 inches tall, weigh roughly 13 to 18 pounds, and have white coats with black or tan markings in smooth, broken or rough textures. The taller type is registered as the Parson Russell Terrier.
Many are bold, clever and funny, with a strong prey drive and a talent for digging, climbing and escaping. They suit active adopters who enjoy training, and they are rarely couch dogs. In Dayton, that means daily vigorous exercise and mental work, plus fences checked for gaps. Dogs vary, and many end up in shelters because their energy was underestimated.