Cuttlefish

Cuttlefish are a flexible cephalopod characterised by their ability to mimic the appearance of objects, other fauna or people (of course according to their size) to a limited degree. A cuttlefish may disguise to blend in among objects, or to create a decoy that is convincing from a distance. Cuttlefish only disguise as entities and do not camouflage directly into surfaces or backgrounds. They have limited mobility while disguised, for instance able to make simple movements such as waving, but would quickly drop the disguise upon deciding to escape. Cuttlefish propel themselves through water at incredible speed and propel themselves on land using bursts of compressed air, during which they are very much visible. Cuttlefish would often put themselves at risk by disguising on land, on which they can breathe for a decent length, but would remain close to the body of water for quick escape.

A cuttlefish's wealth of disguises builds with observation. It is not limited to disguising as a subject immediately in view. It can disguise as whatever it has observed during its life, and so the accuracy of the disguise is based on memory. A cuttlefish cannot imagine or invent a completely new appearance.

Though they are non-speaking fauna, cuttlefish could provide visual information about people and things they have seen through interrogation. They can be kept as pets, but their difficulty to capture makes it rare.

The cuttlefish's shape-shifting ability is unique, found in no other species.

A group of cuttlefish can collaborate in a team disguise, indicating some form of communication among fellows. For instance, a group of small cuttlefish could form a picnic scene with its various components. Lord knows how that would be useful though.