Yellow fish gelatin helps cats grow healthily in the eye and brain and increase immunity. This product contains catnip, which is cat's favor, can let the cat be excited and removal hairball. The bottom of the product can be glued to the ground or wall, and the cat licks the food interestingly. The product has a transparent cover to protect. When cats do not want to eat, you can cover it up until the next eating. All foods are non-toxic and natural, this energy ball is harmless and healthy for cats.