Most important facts
- Group
- Terrier
- Size
- Small
- Weight
- 5–8 kg
- Lifespan
- 13–16 years
- Coat
- Smooth, rough or broken
- Energy
- High
- Height
- 25–30 cm
- Colours
- White with tan or black
- Shedding
- Moderate
- Est. feeding cost
- ~£18/mo
- Gear to consider
- Tough chew toys, ball launcher, secure harness
Typical dry food, adult
About the Jack Russell Terrier
The Jack Russell descends from the fox-working terriers bred by Parson John Russell in Devon in the nineteenth century, built small enough to go to ground and game enough to want to. The type spread through hunt kennels and farms long before the show ring took an interest. The modern dog keeps those working instincts intact, which is worth remembering when something rustles.
Jack Russells are fearless, energetic and endlessly curious, a big terrier personality in a small, sturdy body. They were bred to work and it shows, so expect enthusiasm for digging, chasing and inspecting anything that rustles. Most live long, busy lives well into their teens, and they act young for most of them.
Well socialised, they make great family dogs, though they tend to suit homes with older children and need a real outlet for all that energy. A tired Jack Russell is a charming one, and the reverse is also true. Give the digging urge a legal outlet like a sandpit and everyone stays friends.
Common health conditions
Things Jack Russell Terrier owners commonly watch for. Guidance, not veterinary advice.
Luxating patella
Kneecaps can slip out of place in small breeds, and keeping weight sensible takes the strain off those busy little joints.
Primary lens luxation
A painful inherited eye condition with a DNA test available, so buy from breeders who test for it.
Pancreatitis
The breed can be prone to pancreatitis, so keep the diet steady, avoid rich scraps and treat sudden tummy pain as a vet visit.
Skin allergies
Itchy skin is common and the causes vary, so work with your vet to find and manage the triggers rather than guessing at foods.
Feeding a Jack Russell Terrier
Don't be fooled by the size. At 5 to 8 kg an active terrier still burns real energy, and it needs a complete food built on a named protein, in portions that look small next to the personality. Two meals a day suits most, with training treats counted in.
Keep portions measured and skip the fatty scraps, which upset more Jack Russells than any dog food does. The Food Finder sizes the daily amount to your dog rather than the pack, which matters when the margin for error is a handful of grams.
Every dog is different — weight, age and activity all shift what a Jack Russell Terrier needs. The turns these breed tendencies into a shortlist matched to your dog’s age, size, budget and needs.
Typical adult weight
5–8 kg
Est. daily calories
280–600 kcal
A broad guide for an average-activity adult in good body condition — not veterinary advice. Real needs vary with age, neutering, activity, health and body condition, so no two Jack Russell Terriers eat exactly the same. Get a personalised estimate or estimate feeding costs.
- Per day
- ~£0.59
- Per month
- ~£18
- Per year
- ~£216
A broad typical monthly budget guide, not a live price quote. Food format, calorie density, pack size and retailer pricing all change the real cost.
Find the right food for your Jack Russell Terrier
Foods ranked to your dog
Answer a few quick questions and the Food Finder ranks foods to your Jack Russell Terrier by score, price, life stage and fit.
Breed at a glance
- Exercise needs9/10
- Appetite6/10
- Trainability6/10
- Good with children5/10
- Shedding5/10
- Tolerates being alone3/10
The good & the worth-knowing
The good
- Energetic, fun and full of character
- Hardy and generally long-lived
- The coat looks after itself
Worth knowing
- Needs lots of exercise and stimulation
- A strong urge to chase and dig
- Better suited to older children
Best matched accessories
All accessories →The collections that suit the breed, judged by the same independent standard.
Common owner questions
How much should I feed a Jack Russell?
Weigh the portions of a complete food and size them by the waistline, because on a dog this size an extra spoonful a day adds up fast. Little dogs vary a lot between individuals, and the Food Finder sizes the portion to weight, age and activity, so you never have to guess from the pack chart.
What is the best food for a Jack Russell?
A complete recipe built on a named protein, with enough energy for a busy dog and portions measured so the engine stays lean. Smaller kibble suits smaller jaws, and food-dispensing toys put that terrier brain to work at mealtimes. Browse the matched foods below, or answer the Food Finder's questions for a shortlist ranked to your dog.
Why does my Jack Russell get an upset stomach?
Fatty scraps and sudden food changes are the usual culprits, and the breed can be prone to pancreatitis, which makes rich leftovers a genuinely bad idea for a Jack Russell. Keep to a steady, sensible diet, change foods gradually and see your vet if upsets keep coming or arrive with pain or listlessness.