Conclusion. Concluding with a fascinating statistic, Jack Russell Terriers challenge the conventional canine age ratio. Exploring their lifespan reveals an engaging journey of 13-16 years on average, but with skillful care, these spirited companions can prolong their years into the late teens and even early twenties.. The Jack Russell Terrier, also known as the Parson Russell Terrier, is a lively, independent & clever little dog. For info on the breed, read our guide here.. Lifespan. The general life expectancy for a Jack Russell Terrier is between 13 and 15 years. While they are generally healthy, they are prone to a few health issues, which we explore.

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The typical life expectancy of Jack Russell Terriers is between 12 and 14 years. However, some Jack Russells may live longer, with some reaching 20 years or more. This variation in lifespan can be attributed to several factors, including genetics, diet, lifestyle, and overall health.. I have now owned a Jack Russell Terrier for more than 2 years, and here is what I can tell you on this topic. Jack Russell Terriers live on average between 13-16 years. Jack Russell's can often have common health problems later in life, such as deafness and some eye conditions. Still, overall, a Jack Russell is a healthy, long-living dog.