How to Estimate the Adult Size of a Jack Russell Puppy

Written by marie dellamy
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How to Estimate the Adult Size of a Jack Russell Puppy
Jack Russells make great companions, but need plenty of exercise and stimulating activities. (Jack Russell Terrier image by LOLA from

Many new dog owners have the same question: How big will my dog grow to be? This is an important question to consider when choosing a dog, as many people have limitations on space. The Jack Russell Terrier, known for its faithful companionship, high intelligence and boundless energy, makes a great companion. Determining the adult size of your Jack Russell is relatively simple.

Skill level:


  1. 1

    Check the official size listing of the breed. The Jack Russell is a well-established breed and known to grow to a height of 10-15 inches and a weight of 6.4-8.2kg. If your dog conforms to the standards of the breed, he should fit somewhere within these limits.

  2. 2

    Consult with your breeder or the organisation through which you purchased your terrier. They may be able to provide information on the size of your dog's parents and grandparents. This will be a great indicator of your dog's future growth.

  3. 3

    Check with your veterinarian. A well-trained vet can usually give you a good idea of how large or small your dog will be. If you are concerned whether or not your Jack Russell is a true purebred, your vet can examine him and predict future growth.

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