A Corgi will tell you it is starving thirty seconds after dinner.
It sits square in front of you, ears up like two satellite dishes, and holds your eye with the patience of a dog that has run this routine many times before. Usually that same evening.
Corgis were bred in Wales to move cattle. They darted in, nipped at heels and dropped low under the kicks, and a dog doing that all day needed a big engine and the appetite to fuel it.
Most Corgis today herd the sofa, the kids and the mail carrier. The appetite never got the message.
On a dog this long and this low, extra weight rides on the spine. And Corgis already carry a genetic reason to be careful with their backs, which we will get to in a moment.
So this page does the arithmetic the Corgi will not. Five dry foods, every figure the brands print, and the number that matters most for a dog built this low to the ground: calories in the bowl.
Then the maths that follows the bowl: how many calories your Corgi actually needs, why a scoop is a guess and a scale is not, and what one biscuit a day really adds up to.
The short answer. For a Corgi, the first number to check is calories per cup, which runs from 243 to 340 across these five foods. Hill’s Science Diet Adult Light has the lightest scoop, and Royal Canin Medium Adult has the richest.
Pick the food your vet is happy with, weigh it, and let the scale, not the cup, decide the portion.
At a glance
A big appetite on a small frame
The AKC standard puts a Pembroke Welsh Corgi at 10 to 12 inches tall and not over 30 pounds for a dog or 28 for a bitch. In show condition that is about 27 and 25 pounds.
A Cardigan is a little bigger: 30 to 38 pounds for dogs, 25 to 34 for bitches. Either way, that is a long back and short legs carrying every pound of dinner.
That long back comes with a genetic catch. Corgis commonly carry a gene variant called CDDY, which shortens the legs and makes the cushioning discs in the spine age early.
The Veterinary Genetics Laboratory at UC Davis reports a frequency for that variant of about 0.83 in the Pembrokes it has tested and 0.85 in Cardigans. In plain terms, most Corgis carry at least one copy, and the lab says one copy is enough to predispose a dog to disc herniation.
Genes are not something you can change at dinner time. Weight is.
A 2013 study in PLOS ONE looked at long-backed breeds and found that the longer the back relative to height, the higher the risk of a disc extrusion in the mid to lower back. A higher body condition score raised the risk too.
The weight effect was smaller than the effect of the back itself. But a Corgi’s back is fixed at birth, and its waistline is decided one bowl at a time.
How many calories a Corgi needs
The American Animal Hospital Association gives a simple formula. Resting energy is 70 times body weight in kilograms to the power 0.75, and a neutered adult needs 1.4 to 1.6 times that.
For three typical Corgis it looks like this. Your vet will refine it by checking your dog’s body condition, so use it as a starting point.
| Dog | Weight | Resting kcal | Daily kcal (neutered) | Cups of the lightest food | Cups of the richest food |
|---|---|---|---|---|---|
| Pembroke female at the show weight | 25 lb | 433 | 606 to 692 | 2.7 | 1.9 |
| Pembroke male at the show weight | 27 lb | 458 | 642 to 733 | 2.8 | 2.0 |
| Cardigan at the top of the female range | 34 lb | 545 | 763 to 872 | 3.4 | 2.4 |
The last two columns assume the middle of the range, 1.5 times resting energy. Same dog, same calories, but a bowl of Hill’s Adult Light is about 40% bigger than a bowl of Royal Canin Medium Adult.
The cup trap
Here is why that matters. A cup of Hill’s Adult Light holds 243 kcal and a cup of Royal Canin Medium Adult holds 340.
Switch brands scoop for scoop and a Corgi can quietly gain 40% more calories a day. Weigh the food, and use the feeding guide for the food you are actually pouring.
Fat and protein per 1000 calories
Percentages on a bag depend on water and on how many calories the food holds. Grams per 1000 kcal puts every food on the same footing.
Hill’s prints dry-matter averages, so I calculated its figures by allowing 5 to 12% water. The others print minimums, so their real fat and protein are higher than shown.
The five foods in numbers
| Food | kcal per cup | g fat per 1000 kcal | g protein per 1000 kcal | AAFCO basis |
|---|---|---|---|---|
| Hill’s Adult Light | 243 | about 25 (calculated) | about 78 (calculated) | Feeding tests |
| Hill’s Perfect Weight | 298 | about 32 (calculated) | about 83 (calculated) | Feeding tests |
| Purina Pro Plan Weight Management | 330 | at least 25 | at least 75 | Feeding tests |
| Royal Canin Medium Weight Care | 256 | at least 28 | at least 78 | Formulated to meet |
| Royal Canin Medium Adult | 340 | at least 33 | at least 64 | N/A |
I did not feed these to a dog, so there is no taste test here. I read each brand’s own page or label where I could, copied the numbers as printed, and marked anything I worked out myself as calculated.
The foods one by one
Each card shows what is printed on the brand’s page, label or retailer listing. Hatched bars are my calculation, and solid bars on the fat and protein rows are label minimums.
Hill’s Science Diet Adult Light, Chicken Meal & Barley
Dry kibble · weight management
The lightest scoop in the group: 243 kcal per cup.
AAFCO feeding tests · 2961 kcal per kg
Full details
Hill’s prints dry-matter averages: 25.3% protein, 8.1% fat and 12.2% fibre. I turned those into per-1000-kcal figures by allowing 5 to 12% water, so treat them as calculated. The first ingredients are chicken meal, cracked pearled barley, whole grain wheat and whole grain corn. At 243 kcal a cup, the same bowl holds fewer calories than any other food here.
Hill’s Science Diet Adult Perfect Weight, Chicken & Brown Rice
Dry kibble · weight management
The most protein per calorie of the five, by my calculation.
AAFCO feeding tests · 3189 kcal per kg
Full details
The dry-matter averages are 28.8% protein, 11.2% fat and 10.3% fibre, and the page lists glucosamine at 583 ppm and chondroitin sulfate at 1390 ppm. Per-1000-kcal figures are calculated by allowing 5 to 12% water. The first ingredients are chicken, cracked pearled barley, brown rice and pea fiber.
Purina Pro Plan Weight Management, Shredded Blend Chicken & Rice
Dry kibble · weight management
Fat and protein are label minimums, so the real figures are higher.
AAFCO feeding tests · 3578 kcal per kg
Full details
The label prints 27% protein minimum, 9% fat minimum, 5.5% fibre maximum and 12% moisture maximum. Because both figures are minimums, the per-1000-kcal numbers here are floors. The first ingredients are chicken, rice and whole grain corn, and the label cites AAFCO feeding tests.
Royal Canin Canine Care Nutrition Medium Weight Care
Dry kibble · weight management
A light 256 kcal cup; fat and protein are label minimums.
Formulated to meet AAFCO · 3200 kcal per kg
Full details
The listing prints 25% protein minimum, 9% fat minimum, 12.5% fibre maximum and 10% moisture maximum. Fibre is the highest of the five, which is how many weight foods bulk up a bowl. The first ingredients are chicken by-product meal, pea fiber, corn, corn gluten meal and wheat. These figures come from a retailer listing, not Royal Canin’s own page.
Royal Canin Size Health Nutrition Medium Adult
Dry kibble · everyday adult food
The richest scoop here: 340 kcal per cup.
AAFCO basis: N/A · 3616 kcal per kg
Full details
This is the everyday food in the group, included to show what a normal adult recipe does to a Corgi’s calorie count. The listing prints 23% protein minimum, 12% fat minimum, 3.4% fibre maximum and 10.5% moisture maximum, with brewers rice, chicken by-product meal and oat groats first. The listing I read does not state an AAFCO basis, so that is N/A, and the figures come from a retailer page.
The treat maths
Take a Corgi on 650 kcal a day. A 40 kcal biscuit is about 6% of the day, and ten of them are 400 kcal, which is most of a dinner.
Counting treats is easier when you weigh everything. A simple digital kitchen scale will do the job.
What about grain-free?
The US FDA has investigated a possible link between certain diets, many of them grain-free, and a heart condition called dilated cardiomyopathy. A clear cause has not been established.
That is not a reason to panic, but it is a reason to talk to your vet before choosing a grain-free food.
Puppies and seniors
This page is about adult Corgis. A puppy needs a food labelled for growth, and a senior may need a different calorie target, so ask your vet before you apply these numbers.
Questions to take to your vet
- What is my Corgi’s ideal weight, and what is their body condition score today?
- How many calories a day should we aim for?
- Which of these foods suits my dog, and how should I switch?
- How many calories in treats are fine?
Frequently asked questions
What is the best food for a Corgi?
There is no single best food. For a Corgi the useful questions are how many calories sit in a cup and how much fat and protein come with each calorie, which is what this page compares.
How many calories does a Corgi need a day?
Using the AAHA formula, a neutered Corgi at the show weight of a Pembroke needs roughly 600 to 730 kcal a day. Your vet will adjust that by checking body condition, so treat it as a starting point.
Which of these foods has the fewest calories per cup?
Hill’s Science Diet Adult Light, at 243 kcal per cup. Royal Canin Medium Weight Care follows at 256, and Royal Canin Medium Adult is the richest at 340.
Is grain-free food safe for a Corgi?
The US FDA has investigated a possible link between certain diets, many of them grain-free, and a heart condition called dilated cardiomyopathy. A clear cause has not been established, so talk to your vet before choosing a grain-free food.
How much should a Corgi weigh?
The AKC standard says a Pembroke should not exceed 30 pounds for dogs and 28 for bitches. A Cardigan dog should ideally be 30 to 38 pounds and a bitch 25 to 34.
Can I use the cup on the bag to feed my Corgi?
A cup is a rough guide because cups of different foods hold 243 to 340 kcal here. Weigh the food and use the feeding guide for the food you are actually pouring.
This is a research comparison, not a hands-on test. Figures come from each brand’s page or label unless noted, and may change when a recipe changes.
As an Amazon Associate I earn from qualifying purchases, which costs you nothing extra. This page is general information, not veterinary advice.
References
American Kennel Club. Official Standard of the Pembroke Welsh Corgi and Official Standard of the Cardigan Welsh Corgi (size and weight).
American Animal Hospital Association. 2021 Nutrition and Weight Management Guidelines, energy requirement formulas.
UC Davis Veterinary Genetics Laboratory. Chondrodystrophy (CDDY and IVDD) and Chondrodysplasia (CDPA) (CDDY allele frequencies by breed).
Packer RMA, Hendricks A, Volk HA, Shihab NK, Burn CC (2013). How long and low can you go? Effect of conformation on the risk of thoracolumbar intervertebral disc extrusion in domestic dogs. PLOS ONE 8(7): e69650.
U.S. Food and Drug Administration. FDA investigation into potential link between certain diets and canine dilated cardiomyopathy.
Product figures: Hill’s Science Diet Adult Light; Hill’s Science Diet Adult Perfect Weight; Purina Pro Plan Weight Management label. Royal Canin figures are from retailer listings.
