I guess to design an Oddworld creature you'd have to take into account all of the characteristics of other Oddworld creatures. For example, most creatures with noses usually have them in between the eyes, with the mouth somewhere completely different. And also that most violent creatures usually have no eyes, yet an enhanced sense of smell.
You'd have to take these and more things into account to design a creature that appears to stay true to the evolution characteristics of most of Oddworld's inhabitants.
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