Noun
Any worm belonging to the Plathelminthes; also, sometimes applied to the planarians.
Source: Webster's dictionaryOccasionally, a parasitic flatworm ( Ribeiroia ondatrae ) digs into the rear of a tadpole, causing a rearrangement of the limb bud cells and the frog develops an extra leg or two. citation Northern leopard frog (Rana pipiens) moulting and eating its skin. Source: Internet
P. 20. citation Degree of specialization The land flatworm Platydemus manokwari is a predator mainly specialized in land snails further An opportunistic alligator swims with a deer Among predators there is a large degree of specialization. Source: Internet