The double buffet does what the single does, then adds a second bowl so food and water share one raised oak base. It keeps the eating spot tidy and in one place, and the height is easier on a cat's posture through the day. Two bowls, one considered object on the floor.Both ceramic bowls lift out for washing, which matters when one holds water and needs freshening often. Oak keeps the look warm and grounded, and sizes s and m let you scale it to your cat or your household.