Full concept MODIFICATION of S.T.A.L.K.E.R. Call of Pripyat that touches every game aspect including textures, sfx, music, weapons, A.I., items, weather, mutants, difficulty and much much more!
You can loot skins/hides/pelts from most mutants.
You can even trade these among other Stalkers.
Crows are now also lootable.
See earlier upload about the Mutant Hunting submod here:
Diversity of 'parts/items' that you can acquire through mutant hunting counts a dozen of various meat chunks, a dozen of hides and another dozen of special parts like hands and legs.