Cat Weight Guide
How Much Should a Devon Rex Weigh?
Complete weight guide for the Devon Rex — growth chart by age, healthy weight ranges, and tips to keep your cat at an ideal weight.
Ideal Adult Weight
2.7–4.5 kg
Short coat · Origin: Devon, England
Devon Rex Weight Chart by Age
| Age | Expected Weight |
|---|---|
| 2 months | 0.5–0.8 kg |
| 3 months | 0.8–1.3 kg |
| 4 months | 1.1–1.8 kg |
| 6 months | 1.5–2.5 kg |
| 9 months | 2–3.4 kg |
| 12 months | 2.5–4.1 kg |
| 18 months (adult) | 2.7–4.5 kg |
* Approximate values. Females typically weigh 10–20% less than males of the same breed.
Is My Devon Rex a Healthy Weight?
⬇️ Underweight
- • Ribs, spine clearly visible
- • No fat layer
- • Prominent hip bones
- • Sunken appearance
✅ Ideal Weight
- • Ribs easily felt, not seen
- • Visible waist from above
- • Slight abdominal tuck
- • Active and playful
⬆️ Overweight
- • Ribs hard to feel
- • Rounded shape from above
- • No waist definition
- • Low energy or reluctance to jump
Keeping Your Devon Rex at a Healthy Weight
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Measure meals
Devon Rexs need 150–250 kcal/day. Free-feeding dry kibble is the most common cause of feline obesity.
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Daily play sessions
45 minutes of interactive play daily helps maintain muscle tone and a healthy weight.
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No treats from the table
Human food is often too calorie-dense and can contain toxins. Use cat-specific low-calorie treats.
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Encourage water intake
Well-hydrated cats tend to eat less and have better kidney health. Try a water fountain.
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Annual vet weigh-ins
Cats can gain weight gradually — a vet visit ensures subtle changes are caught early.
Frequently Asked Questions
How much should a Devon Rex weigh?
An adult Devon Rex typically weighs 2.7–4.5 kg. Males are generally heavier than females. Regular weigh-ins at the vet help track healthy growth.
When is a Devon Rex fully grown?
Most Devon Rexs reach full adult size by around 18 months.
Is my Devon Rex overweight?
You should be able to feel your cat's ribs with gentle pressure, see a visible waist from above, and notice a slight abdominal tuck from the side. If not, discuss a weight management plan with your vet.