The Jug is a cross between a Jack Russell Terrier and a Pug purebreds. They are called hybrid dogs due to their origination from two different pure breeds.
The Jug dogs are small in size and stand up to 15 inches with a weight of 20 pounds. These dogs are Pug like in their facial features having Pug like ears and short snout. Their body is lean and resembles that of a Jack Russell Terrier.