What is what kind of cat is garfield?

Garfield is depicted as a domestic shorthair cat. While the comic strip doesn't explicitly state his breed, his appearance—orange tabby coloring, round face, and medium build—fits the general description of a domestic shorthair. It's important to note that "domestic shorthair" is a category encompassing many mixed-breed cats, not a specific breed like a Siamese or Persian. He's essentially a generic, albeit exceptionally lazy and gluttonous, housecat.