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Jack Russell age in human years

jack russell dog

Jack Russell is a small-sized dog breed adored for high energy, playfulness, and intelligence. These dogs are loyal and affectionate with their owners, great at hunting, but may be stubborn as well.

Jack Russells live from 12 to 14 years. Their average lifespan is 13 years (which is longer than the average dog's lifespan). They are generally a healthy breed. Some ways to increase the chance of a Jack Russell living a longer life are proper diet and exercise, regular veterinary checkups to prevent or manage any genetic conditions, and proper dental care.

If you have a Jack Russell, you might wonder how old your dog is in human years. To answer this question, first, you need to know your Jack Russell's dog age. Then convert it using the estimations to calculate small-sized dog age to human years:

  • a 1 year old Jack Russell is 15 in human years;
  • the second year adds 9 more years to the human age;
  • each subsequent year equals 4 years in human years.

Here’s a table you can use to find a Jack Russell age equivalent in human years:

Jack Russell age Human age
1 year 15 years
2 years 24 years
3 years 28 years
4 years 32 years
5 years 36 years
6 years 40 years
7 years 44 years
8 years 48 years
9 years 52 years
10 years 56 years
11 years 60 years
12 years 64 years
13 years 68 years
14 years 72 years
15 years 76 years
16 years 80 years
17 years 84 years
18 years 88 years
19 years 92 years
20 years 96 years
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Some interesting facts:

  • A Jack Russell Terrier is considered an adult at around 1 year of age;
  • They have a playful and energetic personality that may continue well into their senior years;
  • A Jack Russell dog is considered to be senior at around 8-10 years of age.

Jack Russell age chart

Jack Russell age chart in human years