The Cornish Rex weighs between 2.5 kg and 4.5 kg, is small in size and high in energy, with an appetite that belies his size — according to VCA Animal Hospitals. The sparse coat does not insulate the body the way an ordinary cat's does, and the fast metabolism sustains that activity. The food needs caloric density and quality nutrients, not just volume.
In the current My Pet Magazine analysis, the best food for the Cornish Rex is ACANA Indoor Entrée (ACANA), with a technical score of 87.8/100 (🌟 Superior Quality), calculated with the My Pet Magazine IDNM/IPFI methodology across 50 cat foods reviewed in July 2026. See the full ranking ↓
What to weigh in food for the Cornish Rex
Two things weigh most in the choice of a Cornish Rex's food: the breed's energy expenditure and the size of the appetite.
Rex coat and energy expenditure. The Cornish Rex has a short, fine, wavy coat, without the layer of guard hairs most cats have. According to VCA Animal Hospitals, despite the small size, the breed keeps kitten-like energy into adult life and sustains practically constant activity. That expenditure calls for food with good caloric density and quality protein — not a larger portion, but more concentrated nutrients per gram.
An appetite beyond his size. VCA Animal Hospitals describes the Cornish Rex's appetite as demanding, to the point that the cat finishes all the food in the bowl in a single sitting. Because of the breed's high energy level, that usually comes with little risk of excess weight — but the food still needs to follow AAFCO's general principle: caloric density follows the animal's actual activity level, not his appetite. Food designed for a more sedate cat leaves that metabolism without enough fuel.
Criteria scored against the My Pet Magazine nutritional targets (protein, fat, calcium and caloric density ranges by size — see our methodology).
Breed profile and predispositions
The Cornish Rex does not carry, in the veterinary literature consulted, a documented health predisposition linked to diet — unlike breeds such as the Persian or Maine Coon. What marks the breed is its physical conformation: a sparse, wavy coat, without guard hairs, and an energy level that Cornish Rex — VCA Animal Hospitals describes as "kitten-like" even in adult life. That combination sustains proportionally greater calorie expenditure than that of a cat with a conventional coat and similar size, and explains the "demanding" appetite that VCA itself reports in the breed — to the point that the cat finishes all the food in the bowl in a single sitting.
Since the breed has no documented genetic condition that changes the food's composition, the general principle applies: according to AAFCO — Selecting the Right Pet Food, the food's caloric density should follow the animal's actual activity level. For a Cornish Rex — small, live-wire and with a strong appetite — that usually means an energy-dense, concentrated food, prioritizing nutritional quality per gram rather than more volume in the bowl.
Recommended foods for the Cornish Rex
Ranked by IDNM/IPFI technical score across 50 cat foods — no manual product curation.
- 1
ACANA Indoor Entrée · ACANA
87.8/100 - 2
Purina Pro Plan Sensitive Skin & Stomach · Purina Pro Plan
86.5/100 - 3
BLUE Wilderness Adult Indoor · Blue Buffalo
86/100 - 4
Nulo Freestyle Cat & Kitten · Nulo
85.8/100 - 5
Tiki Cat Born Carnivore Indoor Health · Tiki Cat
85.8/100
Frequently asked questions about Cornish Rex food
- Why does the Cornish Rex eat so much for his size?
- VCA Animal Hospitals describes the Cornish Rex's appetite as demanding — the cat may finish all the food in the bowl in a single sitting, even weighing between 2.5 kg and 4.5 kg. The breed's high energy, which stays kitten-like into adult life, sustains that out-of-the-ordinary appetite.
- Does the Cornish Rex have any documented genetic predisposition that food should address?
- No, not in the veterinary literature consulted. Unlike breeds such as the Persian or Maine Coon, the Cornish Rex does not carry a well-established hereditary condition linked to diet. What weighs in the choice of food is the breed's profile — small size, high energy and a strong appetite — not a specific disease.
- Is food for sedentary cats suitable for the Cornish Rex?
- It is not the ideal choice. According to AAFCO, the food's caloric density should follow the animal's actual activity level. A formulation designed for a sedate cat tends to leave the Cornish Rex's fast metabolism without enough energy to sustain his almost constant activity.
- Does the Cornish Rex's fine coat change what he needs to eat?
- Indirectly. The breed's short, wavy coat, without the layer of guard hairs common to other cats, comes with proportionally greater energy expenditure. That reinforces the importance of a food with good caloric density and quality protein, and not necessarily more volume in the bowl.
- Does every Cornish Rex stay lean even eating a great deal?
- VCA Animal Hospitals notes that the breed's high energy level reduces the risk of excess weight even with a strong appetite — but that varies from cat to cat, especially as age advances and activity decreases. Tracking the animal's weight remains the safest way to know whether the portion is right.
Methodology
The block of recommended foods on this page is ordered by My Pet Magazine's IDNM/IPFI technical methodology, which evaluates the nutritional density and ingredient purity of each product in the active dataset for the Cornish Rex's small-size profile — with no manual curation or brand influence.
The score takes into account how well the food fits the breed profile: caloric density matched to the high energy expenditure and quality protein per gram are factors that weigh in the ranking, recalculated whenever the product dataset is updated.
The ranking on this page is a projection of the My Pet Magazine IDNM/IPFI scoring engine over the cat dataset, with no manual product curation. See the full methodology →
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