There is no set amount of food for any dog, depends on height, size, weight and level of activity, this time of year my dogs get 1/3 of the amount that they get when working in the winter, if your dog isn't losing weight then you need to feed less or exersize more, you should always be able to clearly feel the ribs and see about 2 of them when fit, i just keep a check on mine and adjust accordingly. HTH.