Methods to make orange cats gain weight:

1. Ensure the cat’s diet is regular. Orange cats should be fed regularly and quantitatively every day, and they should not be hungry and full every day. This is not conducive to the health of the cat's gastrointestinal tract and affects the absorption of nutrients.

2. Supplement nutrients to cats. You can supplement cats with high-protein foods, such as chicken, beef, etc., but you must also pay attention to the balance of nutrition and let the cat take vitamins. You can also choose nutritional paste to enhance the cat's nutrition.

3. Let the cat exercise more. Exercise can speed up metabolism and allow orange cats to better absorb high-quality nutrients, so orange cats must ensure appropriate amounts of exercise every day.

4. Deworm your cat regularly. If a cat is infected with parasites, the parasites will also absorb certain nutrients from the cat. Therefore, no matter how well the cat eats, as long as there are parasites in its belly, it will not gain weight.

5. Ensure environmental hygiene. It is necessary to ensure the hygiene of the orange cat's living environment and regularly disinfect the supplies used by the orange cat. This can reduce the risk of the orange cat getting sick. Cats with fewer illnesses will be healthier.