The reasons why cats do not gain weight:
1. When a cat reaches the estrus period, it will lose its appetite and naturally will not gain weight. After the estrus period, the cat can be taken for sterilization. , the body will gain weight.

2. When a cat is infected with parasites and the nutrients are sucked by the parasites, it will not gain weight. The cat must be dewormed regularly.

3. If a cat is fed low-quality cat food or canned food for a long time, it will suffer from insufficient nutrition and will not gain weight. You must choose high-quality cat food with complete nutrition for the cat, and also feed it some protein-rich food. food.

4. If the cat’s gastrointestinal condition is not good, it will not be able to absorb nutrients, and it will be difficult to gain weight. It is necessary to feed it some medicine to regulate its gastrointestinal condition, and be careful not to let it catch cold.

5. When a cat suffers from feline-transmitted diseases, uremia and other diseases, it will cause weight loss and must be sent to a pet hospital for treatment in time.