According to Mary Roach in her book "Gulp: Adventures on the Alimentary Canal," cats exhibit a tendency to prefer a single type of food, a trait defined as being monoguesic. This means that once they find a preferred meal, they usually stick to it. Additionally, when it comes to outdoor cats, they often specialize in either hunting mice or birds rather than engaging in both types of prey hunting.

Furthermore, Roach notes that the difference between cat food varieties like Tuna Treat and Poultry Platter largely lies in their marketing, such as the name and visuals on the packaging. While one type might contain more fish meal and the other more poultry, the flavor differences may be minimal or nonexistent, indicating that branding plays a significant role in pet food choices.