Notes

Chile : The Chonchon shapeshifter is a Kalku, or sorcerer that transforms into a mythical bird that announces bad luck. It has the shape of a human head with feathers, talons and big ears that it uses as wings.
Iceland : A hamrammr (from old Icelandic literature) is a werecreature that shifts into the form of the animal it has most recently eaten. Its strength increases with each animal that it consumes. The current (and more correct) word for werewolf is varulfur.
Russia : There are two types of distinctive werewolves in Russian Mythology. The first, the wawkalak, is a werewolf who has been transformed as a punishment by the Devil whom they have angered. Recognized by friends and family, the wawkalak are not considered as evil or frightening. Unable to stay in any one place for long, the wawkalak are distended to roam from home to home and town to town searching out food, shelter and love.

Therianthropy is the mythological ability of human beings to metamorphose into other animals by means of shapeshifting. It is possible that cave drawings found at Les Trois Frères, in France, depict ancient beliefs in the concept. The most well known form of therianthropy is found in stories concerning werewolves.
Among a sampled set of psychiatric patients, the belief of being part animal, or clinical lycanthropy, is generally associated with severe psychosis, but not always with any specific psychiatric diagnosis or neurological findings.[18] Others regard clinical lycanthropy as a delusion in the sense of the self-disorder found in affective and schizophrenic disorders, or as a symptom of other psychiatric disorders.

Therians are individuals who believe or feel that they are non-human animals in a spiritual sense.There are also others who claim to have a psychological or neuro-biological connection—rather than a spiritual one—to their creature of identification. Both often use the term "species dysphoria" to describe their feelings of disconnect from their human bodies and their underlying desire to live as their stated creature.
The therian and vampire subcultures are related to the otherkin community, and are considered part of it by most otherkin, but are culturally and historically distinct movements of their own, despite some overlap in membership.
Clinical lycanthropy?????
In the sci-fi television series Fringe, human/machine hybrids utilize a device which consist of a control box attached to two sets of wires with three prongs on the ends. The prongs are inserted on the roof of victim's and shapeshifter's mouth and when switched on, the shapeshifter will be able to acquire the shape and form of the victim.

http://listverse.com/2009/10/26/10-mythological-creatures-and-shapeshifters/
http://www.gods-and-monsters.com/shapeshifter.html
https://en.wikipedia.org/wiki/Zygon