The ideal height of a mature Parson Russell Terrier is 14” at the highest point of the shoulder blade, and bitches 13”. The weight of a terrier in hard working condition is usually between 13-17 lb.
The Parson is a bold and energetic happy go lucky terrier. They often do well with people who possess those same attributes as well as patience and a sense of humor. Parsons can do very well with children, but many Parsons won't tolerate being handled roughly, so it is not recommended that they be placed in homes with very young children. Parsons do not do well in flats or apartments because of their high exercise requirements. Because the Parson was bred to hunt, it can be difficult for them to live with some pets such as small rodents. While, they will get along fine with cats if raised with them, it's not suggested to leave them alone together unsupervised. They are very intelligent and eager to please. Many excel in activities such as obedience, agility, conformation and earthdog.
Health:
Some are prone to dislocation of the kneecaps, inherited eye diseases, deafness, Legg Perthes-a disease of the hip joints of small breeds of dogs.