Mutant Frogs are regular enemies in Shadow Hearts. They appear in the Fengtian sewers. Their apparence is based on frogs without front legs, that appear to have hands instead of tongues and yellow faces instead of eyes. The colouration of a Mutant Frog is similar to a heat map.
Graveyard frog that mutates by feeding on fresh rump meat of young women. It jumps out of the water to catch humans, and spits out its own gut when surprised.
The name ‘mutant frog’ implies that these enemies were originally frogs that underwent a mutation, which is indeed what they appear to be.