Which animals have specialized mouth parts?

There seem to be very few animals that don't have specialized mouth parts. Birds have all kinds of beaks to suit their needs for fishing, draining water from algae (that's what the "teeth" on a gooses bill are for) cracking hard shells, or tearing meat from roadkill. Rodents have teeth that continue growing so they can gnaw on as many seeds or as much wood as they need to. Many insects have jaws that let them cut through plants or flesh, while a proboscis lets butterflies drink from flowers and lets mosquitoes drink your blood. Even generalist fish have a way to flair their gills out in a certain way to suck in water and food, but the parrotfish has beaklike teeth that allow it to scrape off bits of coral, and stingrays have a downward facing mouth with hard molars that let it crush the hard shells of crustaceans and clams. Snails have mouthparts unlike anything else in the animal kingdom, that let them pull bits of algae or debris off of surfaces.