The Jack Tzu is a mix between a purebred Shih Tzu and a purebred Jack Russell Terrier. They are called hybrid dogs due to their origination from two different pure breeds.
The Jack Tzu is a small dog that stands up to 14 inches and can have weight around 16 pounds. These dogs are loving affectionate. They generally resemble a Jack Russell Terrier in appearance and have a Shih Tzu coat.