Nargles are reptilians about the size of a house cat or small dog. With long forelimbs and thin membranous wings stretching from their hands to their feet, they resemble large bats and are quite agile flyers. Nargle skin contains chromatophores, which through a process called metachrosis, enables them to change the colour of the pigment in their skin. They use this ability to blend in with their surroundings, which not only allows them to evade larger predators, but also gives them an edge over their prey.
Nargles are communal creatures and are often found roosting in trees or caves in small groups, but they prefer to hunt alone. During the mating season, large groupings of Nargles can be seen flocking in the sky.
If you are able to obtain a Nargle egg (Nargle brood size is usually between six to ten eggs) and keep it alive until it hatches, it is possible for the hatchling to imprint on the first person it sees. Once imprinted, the Nargle may be tamed and trained to respond to different commands.