A pet food implement (100) having a container (200) to measure an amount of pet food based on a weight measurement of a pet and a weight management plan, the container (200) having a side (215, 220) with graduated markings (230) corresponding to weight measurements for pets. The container (200) further includes a selectively adjustable wall (300) that defines an intermediate predetermined volume of the container (200) corresponding to an amount of pet food suitable for a pet with a certain weight on a predetermined weight management plan; and a handle (400) coupled to the wall (300) to selectively adjust the wall (300) along the side of the container (200) to define the intermediate predetermined volume, the handle (400) aligning the wall (300) proximate one of the graduated markings (230).