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. That job explains the compact, mostly white body, about 10 to 15 inches tall, with black or tan markings and a smooth, broken or rough coat. The taller type is registered in the United States as the Parson Russell Terrier.
Many Jack Russells are bold, clever and funny, with a strong prey drive and a talent for digging and escaping. In Ocala, squirrels, lizards and the ducks at park ponds can all look like targets. They do well with active adopters who enjoy training, and many land in shelters because their energy was underestimated, so a realistic daily routine matters more than their small size.