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Scooby Snacks (Scooby Snax) are a fictional food item, but there is also a licensed dog treat with the same name. They are used as a form of incentive payment for the cartoon characters Scooby-Doo and Shaggy from the Hanna-Barbera series Scooby-Doo and its various spin-offs.
Producer William Hanna had always imagined that a "Scooby Snack" would taste like some sort of a caramel-flavored cookie. He and Joseph Barbera had previously used the concept of a dog, Snuffles, that goes wild for doggie treats in the Quick Draw McGraw series in 1959. Likewise Hanna-Barbera created dog character Muttley, the year before Scooby Doo, who is similarly rewarded by cohort Dick Dastardly with a medal for reward or valor.
In A Pup Named Scooby-Doo, a treat known as Mellow Mutt Munchie was offered as an alternative to the Scooby Snack. They appeared in the episode "The Return of Commander Cool" (1989), where an amnesiac Shaggy believed himself to be his favorite superhero Commander Cool and Scooby to be Mellow Mutt and, as a consequence, wouldn't allow Scooby to eat a Scooby Snack. Scooby reacted to the Mellow Mutt Munchie the same way he does with the Scooby Snacks. In another episode, "Wrestle Maniacs" (1990), despite no longer being amnesiac, Shaggy tried to offer a Mellow Mutt Munchie instead of the traditional Scooby Snack but his Mellow Mutt Munchie box was empty so Daphne offered a Scooby Snack anyway. (Scooby Snacks were also prominent in A Pup Named Scooby-Doo.)
In Be Cool, Scooby-Doo! (2016), it is shown that the recipe for Scooby Snacks comes from Sorcerer Snacks who were renamed for Scooby-Doo after the gang solves the mystery of who was trying to sabotage their production.
Scooby Snacks seem to come in many different flavours (although all boxes are identical), and in one of the later episodes, "Recipe for Disaster" (2004), Scooby and Shaggy are ecstatic when Shaggy wins a tour of the Scooby Snacks factory where they attempt to sample the batter pre-cooking before being shooed off by an irate worker who thinks they are trying to steal the recipe.
Warner Bros. licensed Scooby Snacks as both an official brand of doggie treats and as a human-consumable cookie snack. Vanilla wafers (similar to Nilla Wafers) were packaged and sold as Scooby Snacks in Suncoast home video stores. They are also sold in store image houses.