If you want your cat to gain weight, just feeding it with cat food will not achieve the effect. You need to feed it with: fish, chicken, beef, canned food, nutritional paste or homemade nutritional supplements, which should be fed when the cat grows to 8-10 years old. Between months, you can also feed raw meat and bones: beef, quail, etc. to make cats fatter and gills. In addition, when feeding cats meat, the amount should be controlled to avoid indigestion after eating too much.