|The following is based on Fallout 3 cut content and has not been confirmed by canon sources.|
Mutant wanamingo is a creature cut from the final version of Fallout 3.
This is a wanamingo very mutated by radiation. Its mouth has been enlarged, it has been rendered sans tentacles and has taken a pinkish color. It appears wildly different than those encountered in Fallout 2. This mutation was most likely brought on by radiation, FEV or a mix of both.
Mutant wanamingos do not appear in the files of Fallout 3, but can be found in the book The Art of Fallout 3.
Behind the Scenes
This creature bears strong resemblance to a creature from the Oddworld Game-Series; the "Slog".