Jack Russell Terrier

This page is educational reference material for preparing questions. A licensed veterinarian examines the animal, makes the diagnosis, and sets the treatment.

Jack Russell Terrier

Quick Facts

AttributeDetails
Breed GroupTerrier
SizeSmall (13-17 lbs)
Height10-15 inches
Lifespan13-16 years
TemperamentFearless, Energetic, Intelligent
Good with KidsGood (with older, respectful children)
Good with Other DogsVariable (can be assertive)
SheddingModerate
Exercise NeedsVery High (1-2+ hours daily)
TrainabilityGood (but independent)

Recommended for Jack Russell Terriers

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Thirteen pounds of full-time work

Jack Russell terriers are about 10 to 15 inches and 13 to 17 pounds, often living 13 to 16 years. They are fearless, loud, and clever. Other dogs are a project because many Russells start fights they cannot finish. Children need to be old enough not to treat a terrier like a wind-up toy. Prey drive means the hamster, the cat, and the squirrel are not friends by default.

Exercise is one to two hours and a job: earthdog, agility, or a flirt pole used with rules. A walk to the mailbox is an insult. They dig out of fences. Hardware cloth along the bottom is part of the yard.

Eyes, knees, and a short leg bone

Primary lens luxation is the emergency and the DNA test. Patellar luxation and Legg-Calvé-Perthes disease make a small dog skip. Deafness occurs. Teeth crowd. VCA explains lens luxation. A cloudy, painful eye the same afternoon it starts is the visit, and the checker should push you toward the car.

Jack Russell terrier questions

Are Jack Russells apartment dogs?

Only if the hours of running and training happen anyway. The size fits. The brain does not. A bored Russell digs, barks, and kills the household routine.

What is lens luxation?

The lens slips out of place and the eye becomes painful and cloudy. It is an emergency, and the breed has a DNA test for the primary form. A squinting terrier is not 'just dramatic.'

Jack, Parson, or Russell?

Registries split these terriers by height and by club. Ask which standard the parents were bred to. The care is similar. The adult size is not identical.

Reader note: The guidance on this page is informational. A veterinarian who has examined the pet is the right source for diagnosis, treatment, and urgent decisions. Sponsored or referral links are kept separate from editorial judgment.