How Much to Feed a Cavalier King Charles Spaniel
Sweet-natured Cavaliers rarely refuse food, and extra weight worsens their common heart issues. Using the veterinary RER/MER formula, an adult Cavalier King Charles Spaniel of about 15 lbs needs roughly 472 kcal per day — around 124 g (1.2 cups) of typical dry food. The calculator below is pre-set for the Cavalier King Charles Spaniel: adjust the weight, life stage and food type to match your dog.
Cavalier King Charles Spaniel portion calculator
Veterinary RER/MER formula — daily calories, grams and cups.
RER 295 kcal × 1.6 (adult, neutered/spayed) = 472 kcal, at 380 kcal/100g. Estimates for healthy pets — always confirm with your veterinarian.
Toy breeds like the Cavalier King Charles Spaniel have the fastest metabolism per pound of any dog, yet their absolute portions are tiny — about 124 grams of dry food across the whole day. That is why treats are the number one cause of obesity in toy dogs: a single dental chew can carry 50–80 kcal, a large slice of a 472 kcal daily budget. Weigh the daily ration once with a kitchen scale, find the right scoop level, and keep treats under 10% of calories.
The Cavalier King Charles Spaniel typically weighs around 15 lbs (6.8 kg) as a healthy adult. That small body has an RER of 295 kcal; applying the adult, neutered/spayed multiplier of 1.6 gives 472 kcal per day, or about 124 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 Cavalier King Charles Spaniel eat per day?
A typical adult Cavalier King Charles Spaniel weighing 15 lbs needs about 472 kcal per day (adult, neutered/spayed), which is roughly 124 grams — about 1.2 cups — of standard dry food, split into 2 meals.
How is the Cavalier King Charles 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 6.8 kg Cavalier King Charles Spaniel, RER is 295 kcal, and the adult, neutered/spayed factor of 1.6 gives 472 kcal per day.
How many times a day should I feed my Cavalier King Charles Spaniel?
2 meals per day is the standard recommendation for a adult, neutered/spayed dog — about 236 kcal (62 g of dry food) per meal. Puppies and kittens need 3–4 smaller meals instead.
My Cavalier King Charles 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 Cavalier King Charles Spaniel is truly losing weight at 472 kcal per day, increase portions by ~10% and re-weigh in two weeks.