Jack Russell Terrier: Weight charts, life expectancy, size, and more

Discover everything about the Jack Russell Terrier, including weight charts, weight progressions of registered dogs, life expectancy, size, and other useful information.

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Head of the dog breed Jack Russell Terrier
  • 25 - 38 cm
  • 12 - 17 lbs
  • 13 - 16 years
  • from 13 months
  • 25 - 38 cm
  • 13 - 18 lbs
  • 13 - 16 years
  • from 13 months

Size, development and life expectancy of Jack Russell Terriers

The Jack Russell Terrier belongs to the small dog breeds and reaches a size of about 25 - 38 cm. Already after a maximum of 13 months Jack Russell Terriers are fully grown and reach their final size.

With a life expectancy ranging from 13 to 16 years, the Jack Russell Terrier falls into the upper average compared to other dog breeds. The final weight varies depending on gender, ranging between 12.1 - 17.6 lbs. Male Jack Russell Terriers are usually around 1.1 lbs heavier than females.

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Male Weight Curve: Development of the Jack Russell Terrier from 2 to 13 Months

Male dogs of the Jack Russell Terrier breed belong to the category of light dogs. After 3 months, they reach a relatively low weight of 6,7 lbs. Within another 3 months, their average weight increases to approximately 11,9 lbs. With a growth period of 7 months, these males ultimately reach a final weight ranging from 13.2 - 17.6 lbs.

Age Weight
2 Month 5.07 lbs
3 Month 7.50 lbs
4 Month 9.92 lbs
5 Month 11.68 lbs
6 Month 13.45 lbs
7 Month 14.77 lbs
8 Month 15.65 lbs
9 Month 16.09 lbs
10 Month 16.76 lbs
11 Month 17.09 lbs
12 Month 17.31 lbs
13 Month 17.46 lbs
14 Month 17.64 lbs

Female Weight Curve: Development of the Jack Russell Terrier from 2 to 13 Months

Female dogs of the Jack Russell Terrier breed are classified as part of the light dog category. By the end of 3 months, they attain a weight that can be considered relatively low, amounting to 6,4 lbs. Over the subsequent 3 months, their average weight rises to approximately 11,2 lbs. As they continue to grow for 7 more months, these females eventually achieve a final weight range spanning from 12.1 - 16.5 lbs.

Age Weight
2 Month 4.85 lbs
3 Month 7.17 lbs
4 Month 9.37 lbs
5 Month 11.13 lbs
6 Month 12.68 lbs
7 Month 13.89 lbs
8 Month 14.77 lbs
9 Month 15.21 lbs
10 Month 15.65 lbs
11 Month 16.05 lbs
12 Month 16.27 lbs
13 Month 16.45 lbs
14 Month 16.53 lbs
Registered dog named 'Abby' Registered dog named 'BamBam' Registered dog named 'Ivy' Registered dog named 'Vahile'

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Precise prediction of the final weight of Jack Russell Terriers

Calculate the final weight for Jack Russell Terrier puppies and young dogs

Do you want to know how big your Jack Russell Terrier puppy will eventually become? With our special dog growth calculator, you can accurately calculate the end weight of the Jack Russell Terrier breed. Whether you currently have an adorable Jack Russell Terrier puppy or your young dog is growing up, our user-friendly tool provides you with valuable information.

Dog Weight Calculator

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Last weighings of registered Jack Russell Terrier owners

Register now for free and get access to all 83 registered dogs of the breed Jack Russell Terrier!

Jack Russell Terrier
MILO
Dog breed MILO
  • Weight:
    10 lbs
  • Age:
    6 months
  • Gender:
    Male Dog
Jack Russell Terrier
Pippa
Dog breed Pippa
  • Weight:
    10 lbs
  • Age:
    7 months
  • Gender:
    Female Dog
Jack Russell Terrier
Star
Dog breed Star
  • Weight:
    8 lbs
  • Age:
    5 months
  • Gender:
    Female Dog
Jack Russell Terrier
Ma Chica
Dog breed Ma Chica
  • Weight:
    9 lbs
  • Age:
    5 months
  • Gender:
    Female Dog
Jack Russell Terrier
Max
Dog breed Max
  • Weight:
    11 lbs
  • Age:
    6 months
  • Gender:
    Male Dog
Jack Russell Terrier
Daisy
Dog breed Daisy
  • Weight:
    9 lbs
  • Age:
    5 months
  • Gender:
    Female Dog
Jack Russell Terrier
Bonita
Dog breed Bonita
  • Weight:
    15 lbs
  • Age:
    2 years, 1 months
  • Gender:
    Male Dog
Jack Russell Terrier
Max
Dog breed Max
  • Weight:
    13 lbs
  • Age:
    8 months
  • Gender:
    Male Dog
Jack Russell Terrier
Loki
Dog breed Loki
  • Weight:
    7 lbs
  • Age:
    6 months
  • Gender:
    Male Dog
Jack Russell Terrier
Jefke
Dog breed Jefke
  • Weight:
    13 lbs
  • Age:
    8 months
  • Gender:
    Male Dog

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Dog looking out of paper hole

Jack Russell Terrier: Frequently asked questions about the dog breed

How much does a Jack Russell Terrier puppy weigh?

Typically, a Jack Russell Terrier puppy weighs around 4,5 - 6,7 lbs at 2 months old and continues to gain an additional 4,19 lbs over the next 2 months. By approximately 18 weeks, when the puppy reaches the adolescent stage, a Jack Russell Terrier puppy weighs about 8,3 - 10,5 lbs.

What is the typical size of a Jack Russell Terrier?

The size of an Jack Russell Terrier can vary depending on gender and genetics. Generally, male Jack Russell Terriers reach a shoulder height of approximately 31.5 cm, while females have an average shoulder height of around 31.5 cm.

When is the dog breed Jack Russell Terrier fully grown?

The dog breed Jack Russell Terrier usually reaches full physical maturity at about 13 to 13 months of age. However, this may vary from individual to individual, as each dog has its own growth rate.

What is the average weight of a fully grown Jack Russell Terrier?

The weight of a fully grown Jack Russell Terrier dog can vary depending on factors such as gender and genetics. On average, male dogs of this breed typically weigh between 13.2 - 17.6 lbs. Female dogs, on the other hand, usually have a weight range of 12.1 - 16.5 lbs.

What is the average lifespan of a Jack Russell Terrier dog?

Jack Russell Terriers generally have a life expectancy of approximately 13 to 16 years. With proper care, nutrition, and regular veterinary attention, they can lead happy and healthy lives.