How Much to Feed a Brittany Spaniel
Brittneys are lean, tireless hunters that metabolize calories rapidly and need calorie-dense food to maintain their athletic physique. Using the veterinary RER/MER formula, an adult Brittany Spaniel of about 31 lbs needs roughly 1271 kcal per day — around 334 g (3.3 cups) of typical dry food. The calculator below is pre-set for the Brittany Spaniel: adjust the weight, life stage and food type to match your dog.
Brittany Spaniel portion calculator
Veterinary RER/MER formula — daily calories, grams and cups.
RER 508 kcal × 2.5 (active / working) = 1271 kcal, at 380 kcal/100g. Estimates for healthy pets — always confirm with your veterinarian.
Medium dogs like the Brittany Spaniel are where feeding guides on the bag are least reliable, because the healthy weight range is wide and activity levels vary enormously. Our 1271 kcal estimate assumes the profile selected above; if your Brittany Spaniel runs, hikes or works most days, recalculate with the “Active / working” setting before changing food brands.
The Brittany Spaniel typically weighs around 31 lbs (14.1 kg) as a healthy adult. That small body has an RER of 508 kcal; applying the active / working multiplier of 2.5 gives 1271 kcal per day, or about 334 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 Brittany Spaniel eat per day?
A typical adult Brittany Spaniel weighing 31 lbs needs about 1271 kcal per day (active / working), which is roughly 334 grams — about 3.3 cups — of standard dry food, split into 2 meals.
How is the Brittany Spaniel'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 14.1 kg Brittany Spaniel, RER is 508 kcal, and the active / working factor of 2.5 gives 1271 kcal per day.
How many times a day should I feed my Brittany Spaniel?
2 meals per day is the standard recommendation for a active / working dog — about 635 kcal (167 g of dry food) per meal. Puppies and kittens need 3–4 smaller meals instead.
My Brittany Spaniel 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 Brittany Spaniel is truly losing weight at 1271 kcal per day, increase portions by ~10% and re-weigh in two weeks.