Mellow Mutt Munchies is a dog biscuit for the comic book superhero canine, Mellow Mutt.
A Pup Named Scooby-Doo
While in his Mellow Mutt costume during a case, Scooby-Doo was bribed with a Mellow Mutt Munchie instead of his own Scooby Snack. (The Return of Commander Cool)
Scooby was offered a Munchie during another mystery, only to find that the box was empty, fortunately Daphne brought her Scooby Snacks for Scooby instead. (Wrestle Maniacs)