Jack Russell Terrier: weight, feeding and growth
Published size figures for the Jack Russell Terrier, with the calculators on this page bounded by that breed range instead of running free.
| Weight | 5–6 kg (11–13 lb) |
|---|---|
| Height | 25–30 cm (10–12 in) |
| Size class | Small (under 10 kg) |
| Resting energy across the range | 234–268 kcal/day |
Figures adapted from the English Wikipedia article on the Jack Russell Terrier (revision 1372436486), used under CC BY-SA 4.0. They describe breed-standard ranges, not any individual dog.
Calorie calculator, pre-set for this breed
Enter your dog's actual weight.
Reading the range correctly
A published range of 5–6 kg (11–13 lb) is a description of the breed, not a target for your dog. The span exists because it covers both sexes, different lines and different frame sizes. A dog at the bottom of the range is not underfed and one at the top is not overweight; both can be in perfect condition, and both can equally well not be.
Weight on its own cannot answer the question owners are really asking. The body condition method assesses the dog by feel and is what actually settles it.
Puppy growth check for this breed
Enter your puppy's weight and age in weeks.
Crate and airline sizing: measure this Jack Russell Terrier for a crate or air container. The calculator checks your shoulder-height measurement against this page’s published 25–30 cm range; it is a reasonableness check, not a claim that every dog is identical. Compare food costs using this dog’s actual weight.
Feeding a Jack Russell Terrier
Across the published weight range, resting energy requirement for this breed runs from about 234 to 268 kcal per day. The figure you feed to is that multiplied by a life-stage factor — typically 1.6 for a neutered adult, which puts a mid-range Jack Russell Terrier near 402 kcal per day before any adjustment for how much this particular dog actually moves.
To convert that into a portion of the food in your kitchen, you need the kcal/cup figure from the bag: the portion calculator does that step.
Sources: Breed figures: Wikipedia — Jack Russell Terrier (CC BY-SA 4.0) · Energy formula: WSAVA Global Nutrition Guidelines