How to Help an Overweight Cat Lose Weight Safely
A chubby cat can look adorable, but extra weight takes a toll. Overweight cats are more likely to develop diabetes, arthritis, urinary disease, skin problems and breathing difficulty. The encouraging news is that most cats can slim down safely with the right plan and a little patience.
Is your cat overweight?
Use the body condition score, a nine-point scale used by vets. A cat at an ideal score of four or five has:
- Ribs that you can feel easily under a thin fat covering
- A visible waist when viewed from above
- A slight abdominal tuck when viewed from the side
- Minimal belly fat pad
An overweight cat has ribs that are hard to feel, a rounded belly, a swinging fat pad and no waist. Weigh your cat regularly using a baby or kitchen scale, or ask your vet to weigh and score. Do not rely only on the number, since breeds differ in size. See Maine Coon for a large breed with a naturally heavy frame.
Health risks of excess weight
- Diabetes. See diabetes in cats.
- Osteoarthritis and reduced mobility
- Urinary tract disease
- Skin and grooming problems, as the cat cannot reach areas
- Heart and breathing problems
- Higher anesthesia risk
- Shortened lifespan
Start with your vet
Before any diet:
- Have your vet confirm your cat's weight, body score and health.
- Check for diseases such as hyperthyroidism, diabetes and kidney disease that influence weight. See hyperthyroidism in cats.
- Agree a target weight and a daily calorie allowance.
- Choose a suitable weight management food.
Use the US vet directory to find a clinic.
Why slow is safe
Cats that lose weight too fast, or stop eating, can develop hepatic lipidosis, or fatty liver disease, which can be life-threatening. Aim for a loss of roughly one to two percent of body weight each week. For a twelve-pound cat, that is about two to four ounces. Never fast a cat.
Step 1: Measure food
Free feeding makes it impossible to control calories. Measure with a kitchen scale, which is more accurate than a cup. Divide the daily allowance into two to four meals, or use an automatic feeder. See how much should I feed my cat.
Step 2: Choose the right food
Weight management and high-protein diets help cats feel full and keep muscle. Wet food can make portions feel larger because of its water content. See wet vs dry cat food. Read labels carefully, as in how to read a cat food label.
Step 3: Limit treats
Treats should make up no more than about ten percent of daily calories. Use small pieces, or use some of the regular kibble as rewards. Avoid human food, which is often high in fat. See can cats eat cheese.
Step 4: Add activity
- Short wand-toy play sessions, two or three times a day
- Climbing trees and window perches. See how to choose a cat tree.
- Puzzle feeders and hide-and-seek feeding, where bowls are placed in different spots
- Rotating toys
More ideas are in indoor cat enrichment ideas.
Step 5: Manage begging
Cats beg because it works. Respond with a routine instead.
- Feed at set times.
- Use puzzle feeders to occupy the cat.
- Give attention, play or brushing instead of food.
- Ignore begging, and be consistent.
- Keep food stored out of sight.
In multi-cat homes, feed cats separately so a heavier cat does not steal food. Microchip-activated feeders can help.
Monitor progress
Weigh every two weeks, keep a chart and meet your vet regularly to adjust. If weight is not dropping after a month, recheck the portions and treats. If your cat loses weight too fast or stops eating, call your vet.
Maintenance
Once the target weight is reached, increase calories slightly, as advised, to maintain it. Keep measuring food and weighing monthly. Weight regain is common without ongoing care.
Common mistakes
Owners often rely on the feeding chart on the bag, which is a generic guess. Others cut meals sharply, which risks liver disease, or forget to count treats, table scraps and the food from a sibling's bowl. Switching foods often can also lead to refusal. Make changes gradually, keep records and review progress with your vet every month or so. Celebrate small wins, such as a lighter step or a more playful cat, since they show that the plan is working.
Involving the family
Everyone in the home must follow the same plan. Post the daily allowance on the fridge, pre-measure meals in containers and agree who feeds the cat. A single extra handful a day can erase the progress made.
Senior cats
Older cats may lose muscle and weight. Ask your vet before dieting a senior cat. See the senior cat care guide.
Frequently asked questions
How do I know if my cat is overweight?
You should be able to feel the ribs under a thin fat layer and see a waist from above. If not, ask your vet to score the body condition.
How fast should my cat lose weight?
About one to two percent of body weight per week, which is slow and steady.
Can I just feed less?
Not without advice, since cutting too far can cause liver disease and nutritional gaps.
How do I stop begging?
Use puzzle feeders, scheduled small meals and play instead of food as attention.
Sources and further reading
Pet food rules and nutrient standards come from regulators and professional bodies. Start here when you want the primary source.
- Cornell Feline Health CenterFeline health information from Cornell University's College of Veterinary Medicine.
- International Cat CareVeterinary-reviewed advice on feline health, behavior and welfare.
- WSAVA Global Nutrition GuidelinesHow to judge a pet food and the company that makes it.
Tailwisp is independent and written under our editorial policy. Learn who we are, or browse all cat guides.
This article is general educational information, not veterinary advice. Every cat is different. If your cat is unwell, or you are unsure about a symptom, diet change or medication, contact your veterinarian.