Home > Dog Breeds > Jug
13-18 lbs
United States
Jack Russell

The Jug is the intentional cross between an ancient and well-known lap dog, the Pug, and a tireless fox hunter that was developed by a breeder by the name of John “Jack” Russell in Devonshire, England in the early 1800s. The two breeds differ a great deal in appearance, structure, and temperament, so their offspring may vary quite a bit between individuals, even within the same litter. This hybrid may or may not do well in an apartment; those that lean towards the quiet and sedate behavior of the Pug will generally do quite well, however, those that take after the Jack Russell are more likely to be both too active and too vocal to make a good neighbor. 

Date of Origin
(Parsons) Jack Russell Terrier and Pug

Jug Health

Average Size
Height: 11-13 inches Weight: 13-18 lbs
Height: 11-13 inches Weight: 13-18 lbs
Major Concerns
  • Patellar Luxation
  • Canine Hip Dysplasia
  • Pug Dog Encephalitis
  • Keratoconjunctivitis Sicca
Minor Concerns
  • Entropion
  • Ectropion
  • Demodectic Mange
  • Brachycephalic Syndrome
  • Sick Sinus Syndrome
  • Ataxia
  • Legg-Calve Perthes Disease
  • Atopy Dermatitis
Occasional Diagnoses
  • Allergies
  • Urolithiasis
  • Hemivertebra
  • Seizures
Occasional Tests
  • Eye Examination
  • Skin Evaluation
  • Radiographs
  • Neurological Testing

Jug Breed History


The Jug is a popular designer dog that has been in development since the 1960s, an intentional crossbreed between the Jack Russell Terrier, an energetic and enthusiastic fox hunting dog developed in England, and the Pug, an ancient lapdog that was favored in China for thousands of years. The Pug is actually believed to be one of the oldest dog breeds on record and the dogs have been considered prized possessions by Chinese Emperors since the Shang dynasty, around 1600 BCE. Like many other dogs that were valued by royalty, Pug puppies were often given as gifts to visiting royal families and other dignitaries and in this way were distributed throughout the world. The Pug became particularly popular with the royal family in 19th century England, where they gained favor with Queen Victoria who’s involvement with this and other breeds led to the establishment of the Kennel Club in 1873. The Pug breed was also one of the first 15 breeds to be recognized by the American Kennel Club when they were first established in 1885. The Jack Russell Terrier, also known as the Parson’s Jack Russell Terrier, is a much more recently established breed than the Pug, developed by a man named John Russell, a parson and breeder of foxhounds in Devonshire, England. Originally inspired by a single female of undetermined parentage that Mr. Russell bought from a milkman in 1819, the Jack Russell Terrier was developed to be both tall enough to keep up with the foxhounds and small enough to go to ground if the fox retreated to their dens. Unlike many other terriers, the Jack Russell Terrier was bred to chase the fox without capturing or killing it. The Jug is typically less high-strung and hyperactive than the Jack Russell Terrier and has fewer breathing problems than the purebred Pug. 

Jug Breed Appearance

Although the Jack Russell Terrier and the Pug are similar in size, they are very different in appearance, temperament, and in purpose, so there can be quite a bit of variation from dog to dog with this crossbreed, even within the same litter. In most cases, the Jug is a heftier animal than the Jack Russell, but not quite so stocky as the Pug. The head is generally broad and the muzzle can range anywhere from the short, blunt muzzle of the Pug to the more elongated and tapered muzzle of the Jack Russell. The coat can vary somewhat from dog to dog as well, depending mostly on the type of Jack Russell that was used in the crossbreed, the smooth, broken, or rough-coated Jack Russell. The most commonly seen coat for the Jug is either a single or double layer coat characterized by short, glossy fur, similar to the coat of the Pug or of the smooth-coated Jack Russell Terrier, however the longer or rougher coat of the broken or the rough coated Jack Russell may also emerge. 

Eye Color Possibilities
Nose Color Possibilities
Coat Color Possibilities
Coat Length
Short Medium Long
Coat Density
Sparse Normal Dense
Coat Texture
Straight Wiry Wavy Curly Corded

Jug Breed Maintenance

The Jug is typically an easy animal to groom. They require only occasional bathing and the short, neat coat that is most commonly seen can be maintained simply by brushing the dog once or twice a week with a bristle or slicker brush. Although mats are less likely with short coats, regular brushing helps to remove dead hair and to properly distribute the dog’s natural oils, keeping their coat shiny and supple. Dogs that inherit the broken or rough coat from the Jack Russell will typically require more brushing, both in the duration and number of sessions. This particular crossbreed may also be more prone to dental disease than other dogs, so regular tooth brushing and dental visits may both improve and extend this hybrid’s life.

Brushes for Jug
Slicker Brush
Nail Clipper
Brushing Frequency
Daily Weekly Monthly

Jug Temperament

The Jack Russell Terrier is an extremely intense working dog with a strong prey drive and a great deal of energy. The Pug, on the other hand, is a calm, affectionate, and somewhat clownish individual whose main purpose in life is just to be with you. This trait, combined with their intelligence, makes them an easily trainable animal, although they can exhibit mischievous or destructive behaviors if they become bored or anxious. In most cases, this crossbreeding results in a brave and energetic canine that also has a sociable and loving nature. The high prey drive of the terrier is rarely extinguished in this hybrid, and in most situations, this dog should not be trusted off leash nor should it be left outside alone as the temptation to chase squirrels and other small animals may prove to be impossible for your Jug to resist. If properly socialized, the Jug is pleasant and affectionate towards all ages and towards other animals, provided it can resist their powerful urge to chase anything that runs. If not socialized, these dogs may be oversensitive to stimuli and can develop jealous, stubborn, or obsessive behaviors. 

Jug Activity Requirements

The Jack Russell Terrier tends to be an extremely active little dog, but the Pug tends to be a more sedate, sometimes even lazy, canine. While a hybrid animal can end up with activity requirements on either side of the spectrum, the most common outcome ends up somewhere between the two, resulting in an energetic animal, but not a hyperactive one. Ensuring that your Jug gets at least 45 minutes to an hour of vigorous exercise each day is generally sufficient to keep this dog healthy and fit, although breaking it up into two or three shorter exercise sessions will be more beneficial than exercising for the full time just once a day. Dogs that have shortened muzzles are also at higher risk of developing problems due to overheating and should not be overtaxed when the weather is warm.

Activity Level
Low Medium High
Rec. Walk Mileage Per Week
5 miles
Minutes of Activity Per Day
45 minutes

Jug Food Consumption

Cups Per Day
0.8 cups
Daily Cost
$0.8 - $1
Monthly Cost
$25 - $30

Jug Height & Weight

6 Months
Height: 11 inches Weight: 12 lbs
Height: 11 inches Weight: 12 lbs
12 Months
Height: 12 inches Weight: 15 lbs
Height: 12 inches Weight: 15 lbs
18 Months
Height: 12 inches Weight: 15 lbs
Height: 12 inches Weight: 15 lbs

Jug Owner Experiences

6 Years
4 People
House & Yard
As a puppy she was super active and loved to play with toys and she also would get bored easily and start chewing on things she wasn't supposed to. When Molly hit around age 3 she wasn't so interested and toys and she just wanted to go outside play, eat, and sleep. Now that she is 6 she loves just cuddling with us all day and she is well tempered. She loves meeting new people and she is really good at watching little ones.
1 month ago
Book me a walkiee?