The Jack Russell lifespan is 13-16 years, which is better than the average lifespan of 10-13 years for dogs in general. At a height of 10-12 in (25.4-30.4 cm) and weighing only 9-15 lbs (4-7 kg), this is a pretty small dog. And, small dogs tend to live longer than big dogs, although experts don't really understand why this might be.. 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.

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Jack Russell Terrier Average Lifespan. On average, you can expect a Jack Russell Terrier to live for 13 to 15 years. Some factors that impact your dog's lifespan, such as genetics and inherited health conditions, are mostly out of your control. We'll discuss what you can do to help your dog have a long lifespan, in the next section.. Breed group - Working dog. Height - 10 to 15 inches (to shoulder) Weight - 13 to 17 pounds. Coat length & texture - Medium to long, coarse texture. Coat color - Jack Russell dogs typically have three coat colors: white, tan, and black. Purebred dogs will always have some white in varying amounts, while some mixed breeds may be solid.