American Bull-Jack

17-50 lbs
10-25"
United States
American Bulldog
Jack Russell Terrier
Not much is known yet about the American Bull-Jack, and many people will get this hybrid’s parentage confused with the English Bulldog and Jack Russell Terrier. The American Bull-Jack is a hybrid breed of the American Bulldog and the Jack Russell Terrier. The American Bulldog brings the height and the weight while the Jack Russell Terrier brings the feisty, fun-loving pizazz to this hybrid. The American Bull-Jack is envisioned as a 50/50 ratio between its parent breeds and serves as an excellent family companion. However, this breed’s high intelligence and feisty nature require a seasoned dog owner who can devote time and love to training.
purpose Purpose
Gaurding, companion
history Date of Origin
2000s
ancestry Ancestry
American Bulldog, American Staffordshire Terrier

American Bull-Jack Health

Average Size
Male American Bull-Jack size stats
Height: 10-25 inches Weight: 17-50 lbs
Female American Bull-Jack size stats
Height: 10-25 inches Weight: 17-50 lbs
Major Concerns
  • Deafness
  • Cataracts
  • Glaucoma
  • Hip Dysplasia
  • Epilepsy
  • Hemolytic Anemia
Minor Concerns
  • Cherry Eye
  • Lens Luxation
  • Mass Cell Tumor
Occasional Tests
  • Eye Examination
  • Ear Examination
  • Blood Tests
  • Neurological Testing

American Bull-Jack Breed History

The American Bull-Jack is a modern designer breed that aims to strike a 50/50 balance between the two parent breeds regarding looks, temperament, activity levels. Originally developed as a companion for an active family, this hybrid does not yet have any standards for breeding. The American Bull-Jack is a native of the United States where his American Bulldog parent was also developed and standardized. The Jack Russell Terrier parent is a native of England but has proven a popular dog in the United States. The Jack Russell Terrier has a tireless drive and requires a lot of exercise and mental stimulation. The American Bulldog, though of moderate to high energy as well, lives for short bursts of energy but is considered a degree or two less active than the Jack Russell. When combining the two breeds, the American Bulldog brings a slightly more moderate energy level and increased loyalty while the Jack Russell Terrier brings playful, feisty, and intelligent traits. The high intelligence and willfulness of the hybrid American Bull-Jack require a seasoned dog owner with patience and time to devote to training. The Jack Russell Terrier breed is highly capable but can be stubborn. The American Bulldog is equally as stubborn and can develop destructive behaviors if left to his own devices. However, this hybrid makes for a wonderful family dog and loyal companion when given the proper training and attention.

American Bull-Jack Breed Appearance

The American Bull-Jack is a 50/50 strike between the American Bulldog and the Jack Russell Terrier, and while the American Bulldog is seen in all colors, the resulting hybrid is most often a dual-color combination with white. Many times, American Bull-Jacks will have distinctive facial markings, such as eye patches or markings above the eyes. The American Bull-Jack’s head is broad but not as broad as the American Bulldog’s. The muzzle is medium length and slightly shorter than the head. Dark eyes are set low and apart, and the ears are set high, V-shaped and usually fall forward when not cropped. The American Bulldog brings height and weight to the hybrid and increases the size to solid medium-sized dog class. The skin on an American Bull-Jack is tight, and the hair is short and hard displaying this hybrid’s powerful muscle structure. The tail on an American Bull-Jack is set low but carried above the level of back when active.

American Bull-Jack Breed Maintenance

Despite the American Bull-Jack’s short, hard coat, this hybrid is known to moderately shed. Brushing the America Bull-Jack once a week will significantly help remove dead and loose hair from the coat and keep the coat looking and smelling its best. All dogs need their teeth brushed to keep the tartar from building up, and the American Bull-Jack should have his teeth brushed at least twice a week. Proper dental hygiene will also help prevent tooth and gum decay and bacterial infections. While brushing your American Bull-Jack’s coat and teeth, also check his ears and use a veterinarian approved solution to gently remove any dirt, wax, or debris from your dog’s ears. Only bathe your American Bull-Jack when necessary, and most times, a room temperature cloth applied brushing will help keep your American Bull-Jack clean.

American Bull-Jack Activity Requirements

The American Bull-Jack is a feisty, people loving dog. Wherever their people are the American Bull-Jack wants to be as well. The American Bull-Jack gets its people loving traits from its American Bulldog parent and doesn’t make for a good watchdog. When it comes to children, the American Bull-Jack has patience and high energy for running around and playing but prevent children and adults from rough play, teasing, or tail pulling. The American Bull-Jack is a social dog who will often greet strangers with energy. Be careful with people who are timid or fearful of dogs since this breed is sensitive to human emotion. The American Bull-Jack springs two breeds who can be aggressive towards other dogs and animals. The Terrier family was bred for ratting and small vermin hunting while the Bulldog family was originally bred for blood sports and pit fighting. Proper socialization and training at early ages will help the American Bull-Jack better acquaint itself with other animals. Though the American Bulldog has helped subdue the high energy of the Jack Russell Terrier in this hybrid, the American Bull-Jack still requires a lot of play time for its high energy. Additionally, this hybrid can be stubborn making him more difficult to train. The American Bull-Jack needs firm, confident, and calm training from a well-seasoned dog owner and is not well suited to novice dog owners.

American Bull-Jack Owner Experiences

Rascal
17 Months
4 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Playing chase
Cuddles
Fetch
I'm always kept on my toes
3 months, 3 weeks ago
Martino
1 Year
5 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
my love first dog EVER my family HAVE
3 years, 1 month ago
Lucy
3 Years
3 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Short to medium length walks.
Meeting new people in dog friendly bars and stores
Wrestling with my other dog.
Snuggling to watch TV.
Lucy is a rescue who came to me un-housebroken, un-spayed, underweight and with a variety of skin infections. She is prone to hotspots from allergies, which are now easily managed by a high quality kibble and raw food diet. She has had atleast one false pregnancy in her life, which made the spay a challenge. Lucy also developed at stump pyometra after her spay, which required an emergency secondary surgery. Additionally, this poor girl seems to have a malformed joints in one of her hind legs, which she tends to favor. Despite how much she seems to try to hide pain, the bum leg does slow her down a little in cold weather. The pyometra was rather difficult to diagnose because of her tendency to hide discomfort. Never underestimate these dogs desire to not make their humans worry. Lucy is very perceptive to what her humans want from her, and was completely housebroken in a matter hours. She does tend to nibble on the corners of blankets when she is nervous about me leaving the house, but is generally not destructive. She definately knows what the rules of the house are, and likes to make sure that EVERYONE is following the rules, haha. I started her in obedience school the day after I picked her up. Though she can be stubborn if she feels a command is pointless, she always listens when the chips are down, and very much wants to make her people happy. Lucy has never shown an ounce of aggression toward adults, children, dogs, cats, etc. She does however desperately want to make friends with EVERYONE, and doesn't always register that other people, and dogs, may not be as keen on being friends. Much of her socialization training has been me teaching her to let me decide when/whether someone wants their personal space. She is a wonderful, patient, caring dog. She has helped rehabilitate my other rescue who had terrible PTSD. Literally the only thing that can rattle this girl, is the fear of losing one of her pack. She mourned the loss of her little rat terrier friend for months, and lets out a paniced whimper if my other dog suddenly becomes quiet in the back yard. She is a dog that requires a canine friend and lots of snuggle time with her humans to be her happiest healthiest self.
6 years, 10 months ago
Jaxson
3 Years
3 People
House
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Honestly, I’ve never been much of a dog person. I was more a ferret/cat/hermit crab lover. You know, fairly low maintenance pets. At a festival a couple of years ago, the local shelter had some of the adoptees in open circular fencing. I love to love on dogs/puppies, I just didn’t want to be responsible for them. I went to love on the sweet pups, and of course they were bouncing all over each other for affection/attention. All except my Jaxson. He was sweet and calm, and I just had to pet him too. He nuzzled up to my hand, but still didn’t bounce or bark. He never even got up. I fell for him instantly and adopted him on the spot, even though my husband was a little perturbed over it lol. He walked around the people and animals as if he loved everyone, and everyone loved him. He was just so adorable at only 8wks old and blonde/white in color, very muscular and calm. He was a dream puppy! I immediately got him a crate for a medium sized dog, because he was already bigger than a standard JRT, with massive paws, so I figured he would be set for a medium. We owned our own business so I was able to take him to work everyday to work on training. He crate trained immediately, house trained after only 2 accidents, which were mostly my fault. He didn’t leave my side for over 2 weeks, as we were constantly going so I always took him with me. Always training him as well. He’s so intelligent and very observant. But, close to 3 weeks, I figured it was time to get him out to play and socialize. I was shocked. He began growling/barking at every single person he saw! This was not the puppy I adopted! What HAPPENED?!?! I kept him with me too much I’m sure. We had no other pets at all, so he wasn’t being properly socialized, but not really being a dog person, I wasn’t aware of that. It’s almost like he “imprinted” on me in those 3 weeks and is very protective of the property he’s on/in. When we go somewhere, he’ll start growling/barking at people he sees blocks away. It’s over 2 years later and he’s no better about it, so I can’t really take him anywhere. He’s so intuitive/in tune to me and my moods/emotions. He’s so human sometimes it’s unreal! Advice for owners of bull-jacks or anyone thinking of getting one: socialization is important early on if you want a social dog. If you want a guard dog; keep them with the people they’re to be guarding almost constantly for a few weeks after acquiring them. This was unintintional on my part, I just wanted to make sure the training stuck. My husband likes knowing that Jaxson is there to protect me in his abscence. He will, and has bitten people that have come up in my personal space, although he does watch for my reaction/feelings toward them first. He bit once when someone reached from behind me to pet him while his back was turned, a stranger. This person knew he overstepped boundaries and thought since Jaxson was a small dog and calm and sitting beside me; he was harmless. It was more of a snap than a bite and barely broke the skin, but still. There have never been any complaints to animal control though because these people knew they brought it on themselves, but it’s only a matter of time. I’ve tried to get this out of him. His play sessions usually end great, but never get any easier with each socialization. We’ve had so much fun with our bull-jack! He’s amazing, full of energy and the life of the party, as long as he knows the attendees. He’s fulfilled my life. He may have come with some complications, but he’s worth every ounce of his 65lbs lol When I said full of energy; I meant he never rests. Inside, he’s up sniffing everything constantly. Outside; he’s running and chasing every bird & squirrel in the yard, and rarely stops for more than a sniff. Lol
5 years, 8 months ago
Penelope
2 Years
2 People
House
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Penelope is known better as Penny. She is fun loving, high energy and affectionate. She loves to play and always makes me laugh. She is fun just to watch. She tears up most of her toys as she loves to pull the stuffing out of toys and chew on toy squeakers until the squeak stops. We got her when she was 1 1/2 years old and was raised by our son who didn't socialize her enough. So, we are working on socializing. We are also working on her being nice to our two old cats. She is also a bit shy. She has made a lot of progress in the six months we've had her. Penny is a happy girl.
4 years, 11 months ago
Book me a walkiee?
Pweeeze!
Sketch of smiling australian shepherd