Methods to make cats fat:

1. Deworm the body. Parasites in a cat's body will absorb a large amount of nutrients and blood from the cat's body, causing the cat to remain malnourished no matter how much nutrition it replenishes.

2. Supplement nutrition. You can feed your cat more high-calorie, high-nutrient foods, such as beef, chicken breast, salmon, etc.

3. Feed less snacks. Some snacks with low nutritional value but good taste should be fed less to cats to prevent them from being picky eaters and not eating staple food.

4. Sterilization. Cats can be fattened by neutering. After neutering, the cat will be less affected by estrus.

5. Feed nutritional paste. Cats don’t gain weight, and if you feed them nutritious cat food alone, they won’t be able to absorb it quickly. Cats can be fed nutritional paste to maintain adequate nutrient absorption in the body.

6. Regulate the intestines and stomach. You can feed cats some meow stomach motility, regulate the cat's gastrointestinal tract, promote intestinal absorption and digestion, and enhance the cat's appetite.