In comparison to their tiny size, Jack Russell Terriers have actually big, bold, and independent individualities that make them excellent trouble solvers. These challenging terriers were initially bred for English fox hunting and can quickly keep up v the much larger Foxhounds during the hunt. Castle are also fearless sufficient to dig into the ground and chase a fox from your lair!

So, as a each other designed come hunt in little spaces, simply how huge do Jack Russels get? If you the happy pet parent to one of these quick and also clever terriers, you can use our Jack Russel growth chart to track your puppy’s development.

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Here’s every little thing you should know around Jack Russell Terrier weight, size, and growth rate:

Pro Tip: new pet parents can acquire reimbursed for up to 90% that veterinary bills by enrolling in a pets insurance plan. Compare choices for Jack Russell wellness insurance to gain peace that mind knowing your pup has access to gold-standard treatment for life.

Jack Russell Terrier expansion & weight Chart

1 month old2 - 4 lb
2 months old4 - 6 lb
3 month old6 - 8 lb
4 month old7 - 10 lb
5 month old8 - 11 lb
6 months old11 - 14 lb
7 month old11 - 14 lb
8 months old12 - 15 lb
9 months old12 - 16 lb
10 month old13 - 17 lb
11 months old13 - 17 lb
12 months old13 - 17 lb
2 years old13 - 17 lb

Jack Russell Terriers are tiny dogs through an athletic, balanced, and also alert appearance. Please store in mind that the following Jack Russell Terrier weight numbers space estimates, and also your Jack Russell Terrier’s expansion rate might be different. Choose humans, puppies prosper at various rates, and this is totally normal.

Your Jack Russell Terrier’s health is the most important thing. If your puppy is method behind or front of the adhering to weight estimates, you re welcome consult with your veterinarian around your Jack Russell Terrier’s growth and health.

At what period is a Jack Russell Terrier completely grown?

Most Jack Russell Terriers stop growing roughly one year old. If you take a look in ~ our Jack Russel load chart, you can see that breed’s expansion tapers turn off at the 12-month mark. However, that’s not to to speak your JR at home won’t get any kind of bigger! If your puppy proceeds to obtain significant load after their first birthday, consult v your veterinarian together they may be placing on overabundance pounds that deserve to lead to secondary health troubles in dogs.

How large should a 6-month-old Jack Russell Terrier be?

A 6-month-old Jack Russell Terrier have to weigh approximately 11 come 14 pounds and will it is in close to their full adult height, placing them around 10 to 12 customs tall at six months the age. Males tend to be contempt larger, therefore if your puppy is a boy, he might be on the greater end that these arrays or a small above them.


Pro Tip: Download a new puppy checklist with information detailing just how to collection up a vaccination schedule, health plan, and microchips, in addition to helpful advice on keeping your puppy safe and also healthy.

How lot bigger will my Jack Russell Terrier get?

There are three means to suspect the dimension of a Jack Russell Terrier at maturity:

Age. Jack Russell Terriers space usually full-grown in ~ 12 months old, so it’s i can not qualify they’ll grow really much (or in ~ all) after they revolve one. However If your pup hasn’t celebrated their first birthday yet, they probably still have some growing to do. Paws. girlfriend can likewise take a watch at her Jack Russell’s puppy paws to see if they look oversized next to their body and legs. If so, climate they’re most likely still growing. Overlapping paws are a classic adolescent puppy function that suggests they space still pour it until it is full out. Genetics. Lastly, if you bought her puppy from a Jack Russell Terrier breeder, girlfriend can contact them for an ext information on your pup’s suspect size. Your breeder should be maybe to carry out you with a an ext precise estimate since they have additional information on her puppy’s parents and past litter sizes.

What is the size of a full-grown Jack Russell Terrier?

A Jack Russell Terrier should weigh between 13 and also 17 pounds, follow to the official American Kennel club (AKC) Jack Russell Terrier each other standards. A masculine Jack Russell Terrier’s ideal height is about 14 inches tall, when a female Jack Russell Terrier have to be slightly much shorter at 13 customs tall.

As adults, these dogs should have actually proportionate, athletic, and also compact bodies. The each other is the a medium-density bone structure, for this reason they have to not appear overly hefty nor excessively thin.


How carry out I make sure my Jack Russell Terrier is healthy?

As new pet parents probably understand by now, this breed is highly active and also your Jack Russel puppy will flourish up come be just as energetic - unlike various other breeds that can grow out of your “puppy stage”. Follow to the Veterinary facility of America, Jack Russell Terriers need ample practice every day. Without daily mental and also physical stimulation, this dogs deserve to quickly become bored, regularly leading to destructive behavioral issues.

Like most purebred dogs, Jack Russell Terriers space susceptible to a range of genetic health problems, however that’s not to to speak they can not live a long, happy life. Remember: prevention is always much better than treatment. Together with a healthy and balanced diet and also exercise, screening because that genetic conditions is vital part of caring for our Jack Russell Terriers in both the short and long term. The each other is specifically prone to getting ringworms, eye disorders, and also ichthyosis (a rare condition that reasons painful, scaly skin).

Jack Russell Terrier Veterinary prices

Ichthyosis is one incurable, chronic skin problem that needs medicated shampoos and also rinses to manage. Similarly, ringworms are commonly treated v prescription drugs consisting of topical and oral medications. The ongoing price of treatment because that Jack Russell hereditary conditions can quickly add up over the course of your dog’s lifetime.

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Pet insurance acts as a security net need to unexpected health problems arise by reimbursing you because that up to 90% the out-of-pocket veterinary costs. Together pets continue to live longer, they require an ext veterinary treatment so they have the right to have the finest quality of life. To compare pet insurance plans through advisor to find the best solution customized to your needs.