Jack-a-poo Growth Chart (Weight Chart & Size Chart)

The Jackapoo is a cute cross between a Poodle and a Jack Russell Terrier. They’re also known as Jack-A-Poos, Jackadoodles, or Jackpoos. This pup is a sure winner since they are friendly, affectionate, and always have a cheerful attitude.

If you know anything about Jack Russells, you know that they have boundless energy. Jackapoos, like the apple that doesn’t fall far from the tree, are lively pups who enjoy making friends and having lots of playing.

Jack-a-poo Growth Chart
Jack-a-poo Growth Chart

In this Jack-a-poo growth chart, we’ll learn everything there is to know about the Jackapoo’s size and growth stages. We’ve also built an interactive Jackapoo size chart and growth calculator that you can use to estimate your puppy’s mature weight. 

Information on Jack-a-poo
Information on Jack-a-poo

When Do Jack-a-poo Stop Growing?

Jackapoo looks will vary from dog to dog, as with any mixed-breed dog. Your Jackapoo puppy may inherit more Poodle features or more Jack Russell Terrier qualities.

Having said that, this is a little dog, weighing 12-25 lbs and measuring 10-15 inches. Again, this will vary based on the genetics of the dog.

How to clip your dog's nails
How to clip your dog's nails

Their hair is usually short to mid-length and might have the curly texture of a Poodle’s coat or the coarse nature of a Jack Russell’s coat.

Coats are typically black, brown, tan, or white, or a combination of these colors. Longer hair tufts around the face and snout are frequent.

When a Jackapoo puppy is 3.5 to 5 months old, they should be half their adult weight. A Jackapoo puppy will reach full weight between the ages of 7.5 and 13 months, depending on its projected size.

What is the Standard Jack-a-poo Size

Jack-A-Poos are descended from two bright dog breeds and make excellent family pets due to their friendly, vivacious demeanor. They can be stubborn, which must be addressed throughout training to ensure he understands his pack leader. This, combined with early socialization, will help to tame the terrier in him and ensure he gets along well with youngsters and other animals. He dislikes being left alone for lengthy periods of time, which, along with his high energy level, can lead to him getting bored, disruptive, and barking.

A Jack-A-weight Poo’s can range from 13 and 25 pounds, depending on whether his ancestors are Toy or Miniature poodles.

Jack-a-poo Weight Chart

Here is the weight chart of a Jack-a-poo:

Standard Jackapoo
Weight13-26 pounds
Height10-16 inches
When Full-Grown?7.5-13 months
Jack-a-poo Weight Chart

Jack-a-poo Growth Chart – What To Expect
Jack-a-poo Weight Chart by Age


Jack-a-poo 1-2 weeks

Puppies can use their senses of smell and touch from birth, which allows them to rummage about the nest for their mother’s scent-marked breasts. The initial milk produced by the mother, known as colostrum, is high in antibodies, which give passive immunity and help protect the babies from disease during their first few weeks of life.

Puppies sleep about 90% of the time during their first two weeks of life, nursing the rest of the time. All of their energy is focused on growing, and their birth weight doubles in the first week. Newborns are unable to maintain their own weight and must crawl using the paddling motions of their front legs. The limited movement allows the puppies to practice their muscles and coordination, and soon they are crawling over and around each other and their mother.


Jack-a-poo 3-12 weeks

Puppies undergo the socializing phase at the end of the third week of life, which lasts until roughly week ten. During this phase of socialization, pups make attachments with individuals that they will remember for the rest of their lives. The most essential phase is between the ages of six and eight weeks when puppies can most quickly learn to accept others as members of their family. Refer to the article on how to socialize pups for further information.

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The bitch’s milk supply begins to slow down about four weeks of age, exactly as the puppies’ energy requirements grow. As the mother dog gradually weans her pups from nursing, they begin to experiment with solid food.

During this stage, your puppy’s brain development is influenced by the environment. By the 50th day, the puppy’s brain waves resemble those of an adult dog, but he hasn’t been programmed—your job, as well as the jobs of his mother and siblings. Weaning is usually completed by week eight.


Jack-a-poo 4-6 months

Puppies grow so swiftly during this time that you may see changes every day. Not only will your puppy try and challenge you, but this is also the time when puppies will figure out where they are in relation to the other pets in the group. Some arguing and pretend to fight is to be expected. It’s a canine rule that older animals teach the puppy boundaries, which is normal and usually sounds worse than it is.

In fact, the testosterone level of an un-neutered male puppy rises around the age of 4 to 5 months. This is one way that older dogs know that even large puppies are still babies who must be taught good dog etiquette.

Puppies may also go through another fear phase during this time. It can last up to a month, and there may be more than one, particularly in large breed dogs. This is typical and not cause for concern. It usually coincides with development spurts, and you may observe some “flaky” behavior or unnecessary hostility, as well as a protective attitude about toys or territory. Just make sure you don’t reinforce the anxious behavior with additional attention and that you know how to talk to pups without using baby jargon. It’s better to ignore the dread than to reward it. Build the pup’s confidence through training, and he should be able to transition out of it with no further issues.


Jack-a-poo  10-18 months

While the baby may still be emotionally immature, during this period the boy pups begin to leg-lift and mark with urine. The testosterone level in male puppies increases to 5-7 times higher than in an adult dog by age 10 months, and then gradually falls to a normal adult level by about 18 months of age. This helps signal to the senior male dogs that the youngster must be put in his place so you may notice more adult-pup squabbles during this period. 

Girl pups may go into heat (estrus) as early as five to six months, and boys begin to be interested in sex during this period. Most of your pup’s growth in height finishes by this period but he may continue to fill out and gain muscle mass and body weight. The puppy coat starts to be replaced by the adult coat.

Puppies at this age seem to explode with high energy and will do well with structured play and exercise. Training and continued socialization are vital to ensure your youngster knows how to behave politely with other dogs, other animals like cats, and other people including children and strangers of all sizes, ages, and looks.


How To Weigh Your Jack-a-poo Puppy?

If you want to maintain track of your Jack-a-poos weight, you must first learn how to weigh him properly.

To begin, you should be able to weigh your Jack-a-poo at home if he is a puppy or if you are just large enough to hold him. This can be accomplished with a standard bathroom scale.

To begin, weigh yourself and record the result. Then, while standing on the scale, pick up your dog and hold him. The difference in weights represents your dog’s weight.

If your dog is too huge to carry, you can either invest in a dog scale, which can cost upwards of $100, or contact your veterinarian. The majority of veterinarian offices will enable you to use their scale.

Unless there is a health problem, you can weigh an adult Jack-a-poo once every six months. Once a week is sufficient for a puppy to ensure he is growing normally.

What Is A Jack-a-poos Neck Size?

To determine the neck size of your dog, use a soft and flexible tape measure to determine the neck size of your dog where her collar naturally falls. Then, put two fingers between your dog’s neck and the tape measure to ensure that the dog collar fits snugly but comfortably. Jack-a-poos average neck circumference is between 12 and 16 inches.

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How Big Do Jack-a-poos Get?

How big do they get?
How big do they get?

As with any other hybrid breed, we never know what to expect once they reach full maturity. On the other hand, we can make some educated guesses based on the Jackapoo puppy’s parents.

The Jack Russell is a little dog that weighs 12 to 18 pounds and reaches 10 to 15 inches tall at the shoulder. Naturally, a puppy this small should be bred with another smaller dog. As a result, Jack Russells are crossed with Toy or Miniature Poodles.

So, how large can a Jackapoo grow? Your Jackapoo’s full-grown size should be between 10 and 16 inches tall and 13 to 26 pounds in weight. When seeking more reliable predictions, the size of a puppy’s parents and grandparents would be the best place to start.

Factors That Affect Jack-a-poo Puppy Growth 

Diet & Nutrition

Because your Jack-A-Poo is a small to medium-sized dog, he should be fed a high-quality kibble appropriate for his size and activity level. Meals should be divided into two to three feedings, with no fillers such as carbs or grains that may cause him to overeat in order to feel full. Because of his Poodle ancestry, your Jack-A-Poo may be predisposed to two digestive illnesses as he ages: pancreatitis and hemorrhagic gastroenteritis. High-fat meals and treats are strictly prohibited.

A Jack-A-Poo is a lively dog who requires daily exercise and intense play to keep his mind stimulated.

Physical Activity & Health

Health problems that occur in pure-breds can frequently bypass a cross of the breed, and Jack-A-Poos are not known to suffer from any specific condition. Medical disorders he may inherit from his parents include Addison’s disease, Von Willebrand’s disease, patellar luxation, and other joint problems.

Your Jack-A-terrier Poo’s side means he’s an enthusiastic pup who needs frequent daily exercise and intense play to keep his mind stimulated. An active lifestyle is essential for this dog because his inclination to gain weight can lead to painful joint issues later in life. Because he is from a wandering breed, you may want to consider playing in your own backyard rather than a dog park where he may be difficult to catch.

Common Questions about Jack-a-poo

At What Age Is A Jack-a-poo Fully Grown?

Based on this, we should expect a smaller Jackapoo puppy to attain maturity weight between the ages of 7.5 and 11 months. A larger Jackapoo may take 11 to 13 months to attain full adult size.

Puppies typically attain their maximum height before reaching their adult weight. Even though your Jackapoo has stopped growing in height, it will most likely take a few more months for them to fill out and achieve adult weight.

How Long Are Jack-a-poos Pregnant?

Since conception in dogs lasts roughly 63 days, this can vary by several days. Despite the fact that this may appear to be a simple answer, conception is often difficult to pin down. It’s possible for sperm and eggs to remain fertile for up to 48 hours after fertilization, thus the act of mating isn’t a precise assessment of pregnancy. This makes it difficult to estimate the length of the pregnancy without the help of a vet.

The gestational period can be pinpointed much more precisely using hormone assays. To keep track of reproductive hormone levels, many breeders utilize vaginal smear exams and blood tests. They can use this information to figure out when is the best time to breed their buck, how long she will be pregnant, and when she might give birth.

What Is The Life Expectancy Of Jack-a-poos?

In general, the Jackapoo is a healthy breed that is free of numerous hereditary health issues. They have a life expectancy of 12 to 15 years.

However, the Jackapoo, like all breeds, is more prone to certain health issues than others. Fortunately, the majority of Jackapoo’s usual health concerns are minor. This breed is prone to dry skin, allergies, and ear infections, all of which are manageable.

Hereditary health concerns are possible in uncommon circumstances. Deafness, patellar luxation, arthritis, cataracts, thyroid disease, and other issues are all conceivable in this mixed breed.

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How Much Does It Cost To Own A Jack-a-poo?

A Jack a Poo puppy can cost as low as $300 or as much as $800, depending on a variety of factors such as location, whether the puppies are spayed, neutered, or chipped, and the parents’ history.

How To Help Your Jack-a-poo Lose Weight If He Is Overweight 

As with humans, exercise is critical for your overweight dog’s health. Increased movement helps your dog burn off excess energy (and calories consumed). Avoid panic! Exercising your pet does not have to include marathons or lengthy hikes. Regular walks and the opportunity to run and play safely off-leash. 

Even creating a stimulating indoor environment that encourages your dog to exercise on a regular basis can help. Bear in mind that different breeds require varying amounts of exercise, so visit your veterinarian, breeder, or your dog’s breed standard for recommendations on recommended activity levels.

Distinguish Begging from Hunger

Distinguish Begging from Hunger
Distinguish Begging from Hunger

Begging is not necessarily motivated by a desire for more food; it is also used to gain attention. (And, by rewarding the behavior, you reinforce and encourage it to continue.) If your dog begs, do not automatically assume he is hungry. Trust your instincts and keep track of the date and time of your last meal. 

If your dog is prone to begging and you are prone to succumb to those puppy dog eyes, choose a high-protein meal with a fiber blend to help control your dog’s hunger and voluntary food consumption. This manner, you may feed your dog with the assurance that he will feel fuller and content for a longer period of time.

Restriction on treats and table scraps

Even when our dogs are not begging, many of us provide an excessive amount of treats and table scraps. Dogs are not required to share our food! Consider treats and scraps for your pet in the same way that you would candy for children to help you keep them in check. If you’re going to utilize snacks for training, choose low-calorie, low-fat ones and keep the portions small. 

As an alternative, keep in mind that clickers are excellent for reinforcement… and they have no calories! After all, a few extra pounds can make a significant impact in the lives of dogs, which are significantly smaller than humans. (Even the colossal breeds!) Therefore, focus on a balanced diet and resist the temptation to “reward” them with extra.

Customize Your Dog’s Diet

Not all weight-loss foods are created equal, which is why it’s critical to match your dog’s nutrition plan to their unique needs. Choose a brand that caters to your dog’s unique needs, whether they be weight control, dietary sensitivities, or illnesses.

Conclusion on Jack-a-poo Growth Chart

Jackapoo look will vary from dog to dog, as with any mixed-breed dog. Your Jackapoo puppy may inherit more Poodle features or more Jack Russell Terrier qualities.

Having said that, this is a little dog, weighing 12-25 lbs and measuring 10-15 inches. Again, this will vary based on the genetics of the dog.

The trainability of the Jackapoo is determined by which parent breed is stronger. The Poodle is known for its obedience and trainability, whereas the Jack Russell can be a little more stubborn.

Because both parent breeds are exceptionally intelligent, training usually goes smoothly. Some Jackapoos can be stubborn and proud, which can make training programs difficult. Patience may be needed. However, in the end, you will be able to train your Jackapoo to do almost anything!

Frequently Asked Questions:

How tall will my Jackapoo get?

Jack-A-Poos can range in size from little to medium, depending on the size of its parents, and especially if the Poodle is Toy versus Miniature. They typically weigh 13 to 25 pounds and stand ten to sixteen inches tall.

Do Jackapoos yap a lot?

If you’re looking for a little, charming bundle of energy, the Jackapoo is a perfect choice! This is an obedient, sociable, fun, and loving dog who may be a great family member! Having said that, they have a lot of energy and tend to bark a lot.

Is my Jackapoo going to curl?

The coat of a Jackapoo can vary greatly from dog to dog, depending on heredity. Some have straighter, wirier coats, while others have curlier, tighter hair.

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