Cojack

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18-28 lbs
10-13"
​United States
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Jack Russell Terrier
Pembroke Welsh Corgi
Welsh Cojack, Cacki, Corki

The Cojack is a mix between the Pembroke Welsh Corgi, or the Corgi for short, and the Jack Russell Terrier. This is a medium sized dog with large pointy ears, gorgeous almond-shaped eyes that are full of life, stout little legs, and a longer straight tail. All of these traits are an excellent combination of multiple parts of each parent breed. Just like any dog, the Cojack’s personality can vary quite a lot from dog to dog, but for the most part, he is a great balance between the Corgi and the Jack Russel. Energetic, lively, fun loving, friendly, intelligent, and loyal the Cojack is an easy dog to train and absolutely loves being with his family. In fact, long periods of time alone are very difficult for this little dog to swallow. While he isn’t a big barker, the Cojack may very well bark every once in a while to alert you to something or someone new. If you are looking for a pet that makes an excellent companion who is upbeat but can still appreciate a good chill and cuddle time, then the Cojack may be the perfect breed for you.
Purpose
​Companion
Date of Origin
​Unknown
Ancestry
​Pembroke Welsh Corgi, Jack Russell Terrier

Cojack Health

Average Size
Male Cojack size stats
Height: 10-13 inches Weight: 18-28 lbs
Female Cojack size stats
Height: 10-13 inches Weight: 18-28 lbs
Major Concerns
  • Patellar Luxation
  • Deafness
  • Cardiomyopathy
  • Patent Ductus Arteriosus
Minor Concerns
  • Familial Nephropathy
  • Cleft Palate
  • Intervertebral Disc Disease
  • Persistent Pupillary Membrane
  • Diabetes
  • Tracheal Collapse
  • Eye Problems
  • Von Willebrand's Disease
  • Cutaneous Asthenia
  • Hemivertebrae
  • Degenerative Myelopathy
  • Mitral Valve Disease
  • Hypothyroidism
Occasional Diagnoses
  • Progressive Retinal Atrophy
  • Epilepsy
Occasional Tests
  • Hip X-Rays
  • Dna For Vwd
  • Physical Examination
  • Eye Examinations
  • Complete Blood Work

Cojack Breed History

Because the Cojack is a new hybrid breed, there hasn’t been a lot of time to get a full history on them. However, we can get some idea of what this dog may develop into based on the information that we have on his parent breeds; the Pembroke Welsh Corgi and the Jack Russell Terrier. First, the Pembroke Welsh Corgi is one of the most agreeable little house dogs and it isn’t hard to see why he is so loved. From tall erect ears and bright intelligent eyes, to adorable little legs, the Welsh Corgi will never cease to bring a smile to your face. This adorable breed originated in Wales somewhere around 1,000 years ago. It was believed that the Corgi were a gift from the fairies, who were though to ride them around like horses back in the ancient times. That’s why the breed seems to have “saddle marks” on their back and “harness marks” behind their shoulders. While this story may not be true, it definitely adds to the breed's charm! The Pembroke Welsh Corgi first became well known in the courts of King George VI or Britain in the year 1933 when he presented a puppy as a gift to his two daughters. The Corgi then went on to be registered by the American Kennel Club in the year 1934 and to this day their popularity holds firm. They are used for show and as wonderful family companion dogs. The Jack Russell Terrier certainly doesn’t fall short in the adorable, smile inducing category either. His playful disposition and ever erect stub tail pairs well with the lively light in his large dark eyes. These dogs were first created in the 1800’s when an Oxford student, Jack Russell, fell in love with a Terrier. As an avid fox-hunter, Jack used his Terrier to develop a Fox Terrier line that was known for its ever-present desire to follow foxes and from there, the rest is history. A club in America specific to the Jack Russell Terrier developed quickly and it wasn’t long after that the American Kennel Club decided to recognize the breed; this didn’t settle well with the American fans of the breed, however, as they had strict standards already developed within their own group. This breed is used for all kind of events including shows, working class events, and of course, as companion dogs.

Cojack Breed Appearance

Despite being a hybrid breed, the Cojack seems to do a very good job of sticking to one similar type of appearance. He is a medium sized dog with short, yet stout legs, that hold his long body strongly. The Cojack takes on the Corgi ears, which stand tall and erect, allowing the almond-shaped dark brown eyes to be very visible on the face. A few versions of this breed may end up taking after the Jack Russell Terrier in the way that their ears may bow a little bit at the top, or fold over completely depending on how strong the gene is. No matter which version of the Cojack you get, they are adorable all the way around! Their fur is short and smooth, lying close to the body, but may have a slightly rough texture to it. The fur can come in a number of different colors and marking, but do tend to adopt looks from both parent breed; either patched colored sections like the Jack Russell or the trademark saddle shape and white blaze on the forehead like the Corgi.
Eye Color Possibilities
brown Cojack eyes
Brown
Nose Color Possibilities
black Cojack nose
Black
Coat Color Possibilities
brown Cojack coat
Brown
black Cojack coat
Black
white Cojack coat
White
red Cojack coat
Red
pied Cojack coat
Pied
Coat Length
Short Medium Long
Coat Density
Sparse Normal Dense
Coat Texture
Cojack wiry coat texture
Straight Wiry Wavy Curly Corded

Cojack Breed Maintenance

The Cojack is a very low maintenance type of dog. His short fur tends to shed very little and will only need brushing perhaps one to two times a week just to keep it free of dirt and shiny. While this breed doesn’t shed very often, he does shed a little so he isn’t completely hypoallergenic; however, this would be a great choice of dog for someone who just has mild allergies that aren’t too affected by small amounts of loose hair. Bathing only needs to occur every few months or if your dog gets especially dirty as the Cojack does not have a bad doggy smell. If you have a Cojack with folded ears, be sure to dry them thoroughly after bathing or swimming to avoid any trapped moisture leading to ear infections. Besides bathing and brushing, basic care would be to trim your dog’s nails every few weeks or when you here the nails clicking against the floor. This will keep the paws healthy and snag free. Due to his shorter coat, the Cojack tends to prefer warmer weather and doesn’t overheat too quickly.
Brushes for Cojack
Slicker Brush
Comb
Nail Clipper
Brushing Frequency
Cojack requires weekly brushing
Daily Weekly Monthly

Cojack Temperament

With parents like the Jack Russell Terrier and the Corgi, there is no doubt that the Cojack is going to be a friendly, energetic, and intelligent hybrid breed. While these dogs were both intended to be companion animals, the Jack Russell is indeed a terrier, so he has that herding desire deep within his bones. This trait may pass on to the Cojack, but it will most likely just reveal itself in a lot of energy that can easily be diverted into play or training. Both parent breeds of the Cojack are easy to train and eager to please, so training your dog shouldn’t be too much of a struggle. It is important to start early with training and socialization so that any protective tendencies or bad manners can be diverted early on. The Cojack won’t tend to bark often, but he may alert you to a new person or strange situation if there is a need. This is a great dog for any sized home, as long as there is some way for him to get exercise, and he does wonderfully with families that may have small children or other pets.

Cojack Activity Requirements

Because the Cojack is a breed that has fairly active parent breeds, there will need to be a moderate amount of activity opportunities for him throughout the day. A couple of really good play session or training should be enough to wear him out both mentally and physically. The nice thing about this breed is that, while the Cojack is energetic, he also can be a couch potato; which means plenty of snuggle time! Great ways to interact with your dog and get him so good exercise would be a long walk, a quick jog, playing at the park, a game of fetch, or training. Just 45 minutes to an hour should be plenty a couple times a day to keep the Cojack happy and healthy. Just be sure to spend some of that play time training, as it keeps the dog well behaved and tired out mentally. The Cojack does not bark often and won’t tend to bark frequently even if he is all wound up. This makes him a great dog for in the city or the country; whatever you prefer.
Activity Level
Low Medium High
Rec. Walk Mileage Per Week
9 miles
Minutes of Activity Per Day
60 minutes

Similar Maintenance Breeds to Cojack

Similarly Sized Breeds to Cojack

Cojack Food Consumption

Cups Per Day
3 cups
Daily Cost
$1.20 - $1.40
Monthly Cost
$35.00 - $45.00

Cojack Owner Experiences

Arlo
1 Year
3 People
House
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
I received him from a family whom said he was a chi/Pom mix. However after him growing older And actions I knew this was not correct. Per the vet, I recently discovered that he is cojack. Which explains a lot. Arlo loves a lot. He enjoys attention. If you pet him, you can’t stop until he’s ready. He has major separation anxiety. He loves to chew and destruct shoes and stuffed animals and anything. He will chew any toy until it is demolished. He loves me and is my protector. He is extremely energetic as much as a couch potato. He has been harder to train. He is a beggar and loves to eat real food....he is extremely nervous In the car but loves to have the window down if he’s in one. He is a very nervous dog too, when we go anywhere he’s a shaker. All in all, he needs lots of attention and love and that’s what we do. He does have some Bit of an aggression in him as well, mainly he thinks is playing however he gets more rough than necessary. He sheds a lot, it is not minimal. He is extremely funny at times and can be quite stupid occasionally but it’s funny. He does love chasing birds and squirrels, and has brought me some 😬 he enjoys following a scent as well. He is not a fan of water if he is in it or splashed by it. I love him though and he has been a blessing.
1 week, 5 days ago
Lucky
3 Years
3 People
House
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
We got a cojack he is amazing and so playful...
2 months, 3 weeks ago
Penny
2 Years
6 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Fetch, snuggling, playing with/ our Lab
We adopted her from a local rescue in Michigan who picked her up from a kill shelter in Texas. She has been the perfect addition to our family!
3 months, 2 weeks ago
Domino
18 Years
4 People
House
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Cuddles
Walks
Play
barking
Chase
Considering his age domino has slowed down considerably to that when he was younger. When we got him as a rescue at 6 years old he had suffered abuse and was wary of older males, in a house of children aged 7 to 14 and a single mother this didn’t cause too many problems however over time he did warm up to males after a few years of reassurance and love. It is only as he has aged that he has started to slow down and his coat grow thicker, I say slow down but he still enjoys running around when he feels like it even if it isn’t as often. He is extremely intelligent and always has been learning even in old age, extremely friendly just not with other pets and he has a huge personality.
4 months ago
Buster
6 Years
3 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Rolling On The Floor
Walk
Making Weird Sounds
Look out the window
Buster is really friendly, but he is kind of stupid. He makes weird sounds (they sound like Japanese)!
5 months, 1 week ago
Ruthie
5 Months
2 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Ruthie is very smart and eager to please,thus making her so easy to potty train and quick to learn commands.
6 months, 3 weeks ago
Tazzy
7 Years
7 People
House
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Walking, riding (bike, car, wheelchair, backpack,
The best dog ever!!!
8 months ago
Miso
3 Years
8 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Dog Parks
Running
Walking
Miso is very lovely. She tugs, a lot, when we are walking her. She's so friendly someone could probably just dognap her and she wouldn't care. She works well with the kids in the house, and she recognizes when she does something wrong. However, she has separation anxiety (probably from her shelter days) and legit never tires. She also loves being the "dominant" dog in the park when she's the smallest one. Like, calm down Miso, you don't have to be the alpha all the time! However, I love her nontheless! She's adorable.
8 months, 1 week ago
Gravee
3 Years
7 People
Apartment
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Running
Cuddling
very lovable, cuddling and has a strong build
9 months, 1 week ago
Luna
1 Year
2 People
Apartment
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
running,
Playing
Road trip
My girl Luna is such a sweet dog. She is playful and intelligent but also has a gentle cuddly side to her. She is everything I've ever wanted in a dog.
9 months, 3 weeks ago
Mickie
5 Years
1 People
Apartment
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
friendly, loyal, likes walks, likes squeaky toys, he likes laying in bed with me. He is a good companion for me. He tries to pull me when we walk, but I have to redirect his steps, to where I want him to go. The last couple of days, he has done much better. When I leave home for even a short time, he goes through my garbage. I am trying to correct this bad behavor. I only have had him for 2 months. I think he has done pretty good, for a short period of time.
10 months, 1 week ago
Bocephous
2 Years
3 People
House
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Very good temperament loves to be with family and kids
10 months, 2 weeks ago
Ollivander
9 Months
4 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
swimming
going on walks
Bike ride
Ollivander is very high energy all the time. We have learned to channel that into obedience training. He loves being with the family at all times and going to play in the dog park with other puppers. He also loves belly rubs!
11 months ago
Ginger
1 Year
3 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Nap
Running
Walks
Cuddles
Fetch
Rescue dog when I got her she was very skinny where the other owners didn't take care of her and she was beating my guess because when you tried petting her she would coward away from me and my wife but know she is living the dog dream.
11 months, 1 week ago
Rascal
5 Years
3 People
House
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Watch tv
Fetch
Nap
Cuddles
Walk
Bike ride
Rascal is a wonderful rescue, hes so loving and has a huge personality. He loves being outside and taking long walks. He enjoys being a couch potatoes just as much. The best companion I could have asked for.
11 months, 3 weeks ago
Oscar
3 Years
1 People
House
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Walk
Hike
Look out the window
Chase
Oscar is the most amazing dog I’ve ever owned. He is smart funny, loyal, humble and desires to please! He is sturdy and active and enjoys long hikes as long as I keep him hydrated and rest at times. I live in a very hot area, and he does not do well exercising over 80°. Otherwise he is perfect in every way.
11 months, 3 weeks ago
Jak
3 Years
2 People
Apartment
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Laying in the sun
Car rides
dance
laying on the couch
Fetch
Chase
Run
Walk
My Cojack has been one of the sweetest dogs I have ever had the privilege of knowing. He’s extremely loyal and loving, and loves to meet people and explore new places. He is territorial at home; he does bark at other dogs around our apartment complex, but he makes friends very easily at the dog park. He does tend to shed quite a bit, but I have no problems using a lint roller before work. (He loves to be brushed!) He likes to snuggle in my bed, he prefers to burrow under the blankets; sometimes he prefers to sleep on his own in his crate. He’s very intelligent and has made up his own gestures for telling me he needs to go out. He’s very distractable, and has the worst case of ADHD I’ve ever seen in a dog... everything can make him forget when he’s about to drop a deuce.. Overall, I love this dog more than anything, he is my best friend and I have enjoyed knowing him and learning about him. I don’t feel like Cojacks would make a good companion for anyone who cannot or will not go outside, they love to run. Mine loves to chase and be chased; and loves to go to 5k races and running trails. They can be calm and lazy, but they need to burn the excess energy.
1 year ago
Scout
2 Years
3 People
House
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Jogging
training
Cuddling
Fetch
A very fun little guy with a personality the size of Texas! He's energetic in short spurts and will cuddle when tired out. It doesn't take much to tire him out, just maybe 45 minutes of play or a short jog around the neighborhood. Very well behaved in public, although jumpy at times like a Jack Russell. Still working on that! Very friendly with new people but will warning bark when someone new comes to the door. He watches the house while we are gone and is surprisingly good at keeping us safe!
1 year ago
boo
2 Years
1 People
Condo
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Playing
adopted when he was 2 years old as his owners left him
1 year ago
Buster
6 Years
6 People
House
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Walk
Watching tv
Great with people, not good with other dogs. He was adopted, so we do not know his history.
1 year, 1 month ago
Lilly
11 Years
1 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Walking in the park, playing ball in the yard
Got Lilly from the rescue that I volunteer at (surrendered by her previous owner who wanted a puppy). This cute but sometimes stubborn girl came to me house-trained. She was quick to adapt to my household. She loves lounging in her bed or on the chair, but is energetic when we go for our walks (2 long walks daily), and will lunge at birds, squirrels and other dogs. And boy can she jump! Will jump 4-5 feet when I arrive home. Good thing I have a 6 foot fence in my yard. She is very loyal, and has followed me around the house from the day I brought her home. A great dog!
1 year, 1 month ago
Nicholas
15 Weeks
4 People
Apartment
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Fetch
Watching tv
Walking up stairs
He is BEYOND energetic. He will walk up the stairs in the park all day and play all day if he could. He literally plays until he just drops from being tired lol but he is so cute and wonderful but he is persistent and is hard to train because he doesn’t like treats that much.
1 year, 2 months ago
Soba
3 Years
3 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Soba is the best dog I've ever had. Very friendly and energetic. I love to have play time.
1 year, 2 months ago
Bear
1 Year
4 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
He loves tug a war, playing fetch and hide and se
Bear came to us as a rescue at 6 months old. He was easily trained. He is very loving and protective and does not share his toys with our older dog who has no interest in the toys but Bear does not want the other dog anywhere around his toys. He is full of energy all the time and is very vocal and shares his opinion, loves to swim and dig and hide his bones. Very smart breed, he does tend to herd me around when I have pants on.
1 year, 3 months ago
Jackson
4 Years
5 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Walk
petting
snuggling
Play
Very loving. Interacts well with other leashed dogs by ignoring them. Tried to herd children as a puppy by nipping at heels but was easily distracted by this. Chose our second dog after the loss of our older dog. He will let you know verbally if he is upset which is almost unheard of. He is definitely my husband's dog. He does interact well with cats.
1 year, 3 months ago
Delilah
6 Years
1 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Tag
Fetch
Herding
I love my little Delilah, but she is a ball of energy. She is the smallest dog I have, weighing in at 22lbs, but she can keep up with my bloodhound/pyr mix no problem. She is easily excitable and very protective. I can take her places, but she tends to get nervous. She is definitely a lapdog and has to be next to me as much as possible. One of her favorite activities is herding my cats all over the yard.
1 year, 4 months ago
Rosie
3 Years
2 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
walk, play ball
Rosie came to us here in Massachusetts as a rescue from South Carolina. She is very smart and also a bit stubborn. She loves chasing squirrels and birds. When walking she always has her nose to the ground, finding and following scent trails. At night she jumps into the bed and burrows under the comforter and stays there until late morning. She is standoffish to strangers, but friendly to those she knows. All in all, she is a funny and very sweet dog. And so-o cute!
1 year, 5 months ago
Reggie
1 Year
4 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Walks
Walk
We love our little fur boy,although he can be a challenge at times! We definitely have to spend a lot of time training and working on appropriate doggie manners. He is very eager to please us,loves his training treats but has a tendency to show aggression and is very possessive of "his" belongings-toys,bed and food. We are constantly working on his aggressive nature and it's a slow process with slow progress. He's alright with our young daughter but I wouldn't recommend young children with this breed,sadly. A very picky eater who prefers wet diet over a dry diet. He's very,very affectionate and prefers being a lap dog with your hands constantly moving in petting motion. I've never seen so much energy in a dog!! He sure can run and run and he loves to run and play. Toys are a must with our boy! He loves bones, and anything that squeaks. He can be destructive,chewing many things to shreds, but never his toys!! We love our boy,even if he challenges us from time to time. He is a great dog and keeps us active.
1 year, 6 months ago
Baxter
2 Years
4 People
Apartment
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Our Cojack came to us through a rescue group in MN. He is a tripod due to abuse. We consider ourselves very lucky to have found him. He rarely barks and we have had a fairly easy time training him. Some separation anxiety like the article mentioned. He is always waiting at the door for our return. He has been a wonderful addition to our family.
1 year, 7 months ago
Cupcake
8 Years
5 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Incredible dog. Perfect companion, perfect size, easily trained, very smart and huge personality. She lives her life to make her family happy . . . and to eat!
1 year, 7 months ago
Paddy
12 Years
2 People
House & Yard
Health
Grooming
Friendliness
Energy
Trainability
Pastimes
Running
Walking
A wonderful rescue dog who chose us. He is mostly happy but has severe skin problems. He is covered in various cysts some loook like blackberries.He has a large fHatty lump on his left side below hisshoulder. He is stone deaf and both eyeshave large cataracts. He has to take antihistamines daily. As well as cysts Paddy has what looks like black tar on his skin His depth perception is poor. He seems to have a problem with right hip jointand his lower legs are just bone. He is a very fussy eater I am worried about his future when he will have a dark silent world. We could get one cataract fixed but are not sure he is up to the op
1 year, 8 months ago
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