Dear Conch-L'ers:
Among  the marine gastropods there are many herbivores and many
carnivores, and the carnivores include both predators and scavengers.
 The scavengers are an important factor in breaking down dead
organisms.  Put a dead fish on a shallow, muddy bottom, and within an
hour there may be a hundred or more Nassarius feeding on it.  The land
snails seem to be primarily herbivorous, but there are some predators
like Euglandina.  Does anyone know of any land snails that are either
obligate or opportunistic scavengers, that is, species which are
attracted to and/or feed on dead animal matter?
 
Paul M.