How Much to Feed a Jack Russell Terrier
A rocket in a small package, the Jack Russell often needs active-dog calories despite its size. Using the veterinary RER/MER formula, an adult Jack Russell Terrier of about 14 lbs needs roughly 700 kcal per day — around 184 g (1.8 cups) of typical dry food. The calculator below is pre-set for the Jack Russell Terrier: adjust the weight, life stage and food type to match your dog.
Jack Russell Terrier portion calculator
Veterinary RER/MER formula — daily calories, grams and cups.
RER 280 kcal × 2.5 (active / working) = 700 kcal, at 380 kcal/100g. Estimates for healthy pets — always confirm with your veterinarian.
Small breeds such as the Jack Russell Terrier sit in an awkward spot: big enough to beg convincingly, small enough that leftovers wreck their calorie budget. At a typical 14 lbs, the full daily allowance is roughly 700 kcal — about 1.8 cups of standard kibble. Split it into 2 meals and re-weigh your dog every couple of months, because a single pound of drift is a big percentage change at this size.
The Jack Russell Terrier typically weighs around 14 lbs (6.4 kg) as a healthy adult. That small body has an RER of 280 kcal; applying the active / working multiplier of 2.5 gives 700 kcal per day, or about 184 g of dry food. At these quantities a proper gram scale beats measuring cups — cup-level errors of “just a little extra” compound into pounds over a season.
These numbers are a starting point, not a prescription. The calculator supports every life stage (puppy, puppy, adult, neutered/spayed, adult, intact, active / working, senior, weight loss plan) — a puppy can need two to three times the adult allowance, while a senior or a dog on a weight-loss plan needs noticeably less. Recheck the numbers after any change in weight, activity, food brand or neutering status, and always transition between foods gradually over 7–10 days. For medical conditions, pregnancy or lactation, follow your veterinarian's feeding plan instead.
Frequently asked questions
How much food should a Jack Russell Terrier eat per day?
A typical adult Jack Russell Terrier weighing 14 lbs needs about 700 kcal per day (active / working), which is roughly 184 grams — about 1.8 cups — of standard dry food, split into 2 meals.
How is the Jack Russell Terrier's daily portion calculated?
We use the standard veterinary formula: Resting Energy Requirement (RER) = 70 × (weight in kg)^0.75, then multiply by a life-stage factor. For a 6.4 kg Jack Russell Terrier, RER is 280 kcal, and the active / working factor of 2.5 gives 700 kcal per day.
How many times a day should I feed my Jack Russell Terrier?
2 meals per day is the standard recommendation for a active / working dog — about 350 kcal (92 g of dry food) per meal. Puppies and kittens need 3–4 smaller meals instead.
My Jack Russell Terrier seems hungry after meals — should I feed more?
Begging is not a reliable hunger signal, especially in food-motivated breeds. Judge by body condition instead: you should feel ribs easily under a thin fat layer. If your Jack Russell Terrier is truly losing weight at 700 kcal per day, increase portions by ~10% and re-weigh in two weeks.