In all versions of the character, Scooby-Doo and Shags share several personality traits, mostly being cowardly and perpetually hungry. But their friends (Velma, Daphne and Fred) encourage them to go after the costumed villains, usually with "Scooby Snacks", a biscuit-like dog treat or cookie snack (usually shaped like a bone or, in later versions of the cartoons, Scooby's dog tag), though Scooby's inherent loyalty and courage do often force him to take a more heroic stand.