What is "kleggs"

Kleggs are alien mercenaries in the Judge Dredd comic books.

A Klegg looks rather like a large man with green, scaly skin and the head and tail of an alligator or crocodile. They only take payment in meat, since they are pure carnivores. They are reasonably intelligent, but their ferocity and propensity for eating their foes dominate others' perception of them. Their society - the Klegg Empire - is essentially feudal.