Abstract: A pet food dish formed to protect the contents of the dish from ants. The illustrated dish has an upwardly open central portion for holding a quantity of pet food and allowing the pet access to the food. In one embodiment, the dish has a peripheral portion that is connected to and extends completely around the central food-holding portion. The peripheral portion forms a seal with the central portion and defines an upwardly open, liquid-holding trough that extends completely around the periphery of the dish. When the trough is filled with water or other liquid, it provides a moat or liquid barrier that prevents ants reaching the food in the dish. The trough may be manufactured as part of the dish, or it may be provided as an add-on attachment member to be removably assembled by the user with a standard dish. In another embodiment, a two-member dish device comprises a separate dish member, a separate moat-providing base member, and inter-engaging means on said members to limit relative movement between them.