Amelia Taylor – Cornell University College of Veterinary Medicine
How to Tell If Your Cat Is Overweight
You don’t always need a scale. These visual and physical checks are often more reliable:
1. Body Shape Check
- When viewed from above, a healthy cat should have a visible waist behind the ribs
- If the body looks round or oval with no waist definition, excess fat may be present
2. Rib Test
- You should be able to feel your cat’s ribs easily with light pressure
- If you have to press hard or can’t feel them at all, your cat may be overweight
3. Belly Sag (Primordial Pouch vs Fat)
- A small pouch is normal, especially in adult cats
- A large, heavy belly that swings side to side may indicate fat accumulation
4. Behavior Changes
- Reduced activity or reluctance to jump
- Grooming less, especially around the back or hind legs
- Sleeping more than usual
Common Reasons Cats Gain Weight
- Free-feeding or oversized portions
- High-calorie treats given frequently
- Indoor lifestyle with limited play
- Neutering or spaying (slower metabolism)
- Age-related decrease in activity
Weight gain is rarely due to laziness—it’s usually a mismatch between calories and activity.
What You Can Do Safely
- Measure meals instead of free-feeding
- Switch to vet-recommended weight-management food if needed
- Increase interactive play (10–15 minutes, 2–3 times daily)
- Reduce treats or replace them with play or affection
- Schedule regular weight checks with your vet
Never put your cat on a crash diet—rapid weight loss can cause fatty liver disease, which is dangerous for cats.
When to See a Vet
Consult a veterinarian if:
- Weight gain is sudden or unexplained
- Your cat seems lethargic or breathless
- Weight loss attempts aren’t working
