The cat is too thin. Maybe they have parasites in their bodies. Parasites absorb nutrients from cats, and cats will become thinner. Generally speaking, internal and external deworming should be carried out every three months. You can consider whether there is a disease. Cats can't eat when they are sick, which can also cause them to grow thin. The cat is too thin. Maybe they have parasites in their bodies. Parasites absorb nutrients from cats, and cats will become thinner. Generally speaking, internal and external deworming should be carried out every three months. You can consider whether there is a disease. Cats can't eat when they are sick, which can also cause them to grow thin. If the food is not delicious, or the nutrition is not enough, the cat will not eat enough, leading to malnutrition and thinness. It may be that the cat has accumulated too much cat hair in its stomach, so the owner can give it some hair cream.