Reasons why cats get fat
Overfeeding: If you give your cat too much food, exceeding its energy needs, it can easily lead to weight gain.
Lack of exercise: Insufficient exercise can lead to reduced energy expenditure in cats, resulting in weight gain.
Inappropriate diet: An unbalanced diet or too many high-energy foods can also lead to weight gain.
Illness or physiological problems: Some health problems, such as thyroid problems or diabetes, can cause a cat to gain weight.
After spaying/neutering: Some cats are prone to gaining weight after spaying/neutering due to metabolic changes.

Diseases that may result from an overweight cat
Diabetes: Overweight cats are more likely to develop diabetes because their insulin may not be able to effectively process blood sugar.
Joint problems: Being overweight increases the burden on a cat's joints, leading to arthritis and other skeletal problems.
Cardiovascular disease: Overweight cats may face the risk of cardiovascular problems such as high blood pressure and heart disease.
Difficulty breathing: Being overweight can cause breathing difficulties in cats, especially during exercise or strenuous activity.
Skin problems: Overweight cats may have difficulty cleaning their fur, increasing the risk of skin infections and other skin problems.
Liver problems: Excessive fat accumulation can burden a cat's liver, leading to problems such as fatty liver.
Reproductive problems: Female cats may face difficulties conceiving or other reproductive problems.
5 ways to help your cat lose weight
Weight loss for cats requires a comprehensive consideration of diet, exercise, and overall health. Here are some suggestions:
Gradually reduce daily food intake: Instead of suddenly reducing it drastically, gradually decrease the amount of food your cat consumes each day. This helps your cat adapt to the new diet plan.
Choose low-fat, low-carbohydrate foods (more meat): this includes appropriate food types and daily portion sizes. Consider using specially designed low-calorie cat food to help control weight.
Feed your cat at regular times and in measured portions, and have smaller, more frequent meals: This helps prevent overfeeding. Feeding your cat several times a day, rather than giving them large amounts at once, can help control their appetite.
Limit treats: Try to avoid giving your cat too many treats, as they may contain high calories and high fat.
Increase your cat's interaction: Ensure your cat gets enough exercise. Use toys, games, and interactive activities to encourage activity and help burn off excess energy.

Cat weight standard test
Using a weighing scale: Place your cat on a professional pet weighing scale, ensuring the scale is accurate. This will allow you to directly measure your cat's weight.
Regular monitoring: For adult cats, it's best to weigh them once a month. Kittens or senior cats may require more frequent monitoring.
Record weight: Record the weight each time it is measured so that you can track your cat's weight changes.
Weight assessment: Compare the measured weight to the standard weight range for the cat's breed, age, and sex.
Observe body shape: In addition to weight, observe the cat's body shape as well. A healthy cat should have a moderate body size and a noticeable tuck in at the waist.
Pay attention to other health indicators: In addition to weight, pay attention to the cat's overall health, including the shine of its fur, activity level, appetite, etc.