How much is the amount of food ?

Hi Naotaro, it might be worth speaking to your vet about this. It will depend on whether your cat is male or female and has been desexed. Age and their current weight will also come into play, especially if they are overweight. It will also depend on what you are feeding them (wet and/or dry food) and what brands. There should be some guidance on the packaging of the food you give your pet, however it's important to check if this is the best food for your cat's breed, age, sex, etc. An expert is the best person to ask in this case. I hope this helps! ☺