The Swamp Boys are a music group comprised of 3 crocodiles (one playing a guitar, one playing a banjo and one playing an accordion) and a harmonica-playing raccoon.
They appeared in the Going South sequence of Disneyland's America Sings attraction, where they performed "Polly Wolly Doodle".
When America Sings closed, they took up residence in Splash Mountain. They appear in the finale scene in all 3 versions of the ride. The raccoon was moved to the How Do You Do scenes for the Walt Disney World and Tokyo Disneyland versions, but appears in the finale of the Disneyland version.