An apparatus and method for selectively controlling an animal or pet's access to food is provided by a platform that moves with relation to a base. A lever is connected between the chassis of the platform and the base, whereby parallel movement of the chassis towards the base causes an arm of the lever to engage a door adapted to prevent access to the food. An opposing force is provided and preferably adjustable by the user so the user can set the weight sufficient to cause movement between the platform and the base. The device can be constructed either to prevent access or to allow access to the food upon movement of the platform.