Mechanics of Shapeshifting

The mechanics of shapeshifting have been covered almost from the first recorded appearances of shapeshifting figures.  That is, if we define the mechanics as “how does one change into an animal”.  In fact, this definition of mechanics was a rather major concern for the medieval and early modern sources.  The early modern authors were particularly concerned with the “how to” question, as represented by a couple examples:

  • Peeter Stubbe—A True Discourse. Declaring the Damnable Life and Death of One Stubbe Peeter, a Most Wicked Sorcerer (1590)
  • Henri Bouget—Discours des Sorciers (1602)
  • Jean Grenier—his trial for werewolfism (1603)
  • Thomas Blount—Glossographia: or a Dictionary, Interpreting all Such Hard Words of Whatsoever Language, Now Used in Our Refined English Tongue; With  Etymologies, Definitions, and Historical Observations on the Same (1661)

There were many possible methods of transformation discussed by the sources from ancient Greece through the 17th century.  For the purposes of conserving space, I’ll limit this post to the five most common elements or methods in no particular order.


Removal of Clothing

Many stories of werewolves, in particular, require that the person remove their clothing to change form.  This is a symbolic removal of the trappings of civilization and humanity in order to embrace and become the beast.  Clothing is also, historically, an important indicator of social status, so the soldiers and noblemen of classical and medieval literature removing the symbols of their status is also important.  The shedding of clothing may, or may not, be connected to other elements, such as unguents and demonic instruction.

  • Petronius—Satyricon (1st century CE)
  • Marie de France—“Bisclavret” (late-12th century; though the condition seems to be genetic)
  • Jean Grenier—Trial record (1603)



Often, particularly in classical and demonological sources, the potential werewolf must coat themselves in an unguent of some sort.  In the demonological sources (14th to 18th centuries), the recipe for this unguent is often taught by a demon or devil in return for service.

  • Virgil—Eclogue VIII (1st century CE)
  • Jean Grenier—Trial record (1603)



A favorite throughout history is shapeshifting as a curse.  This stretches back as least as far as ancient Rome, in the written record; at least as far as ancient Greece in the oral tradition.  The source of the curse varies from the pagan gods to agents of the Judeo-Christian God to witches (or simply ambitious noblewomen) in some of the more misogynistic texts.  In sources with divine origin of the curse, the curse seems to be permanent.  In those in which human agency causes the curse, it is reversible.

  • Ovid—Metamorphoses (8 CE; Jupiter curses Lycaeon)
  • —“Arthur and Gorlagon” (12th century; Gorlagon’s wife curses him)
  • Gerald of Wales—The History and Topography of Ireland (1188 CE; St. Patrick curses the people of Ossory)
  • Romance of William of Palerne (c. 1200; Alphouns’s stepmother curses him)


Bathing in a Special Lake

In some, particularly old, stories, the ability to change forms is the result of bathing in a particular lake.  Something in the ritual, which echoes prehistoric rites, allows the bather to change shapes.  It can, in some cases, be that the ritual awakens a latent genetic talent.

  • Pausanias—The Description of Greece (2nd century CE; Demarchus, the Olympic boxer)
  • Augustine—City of God (426 CE; discussion of the Arcadians)


Donning a Wolfskin

A few stories, more in the oral tradition than the written, indicate that wearing a specially prepared wolfskin (or other animal skin) is necessary for the transformation.  This is often connected with other methods.  For instance, in the case of Jean Grenier (1603), supposedly a devil taught Jean how to prepare a wolfskin with a special salve, coat himself in another substance, and wear the wolfskin to turn into a wolf.


Biology of Shapeshifting

The question of biology and shapeshifting is, as one might expect, largely a modern concern.  More specifically, it tends to be a greater concern for urban fantasy and paranormal romances than for more “traditional” fantasy as the former two genres bring in more modern scientific views and foundations.  Some, of course, dodge the question entirely, such as Jack Williamson, in Darker Than You Think (1948), who used lycanthropy as psychic projection—though it is unclear whether the body remains behind, is transformed, or something else, especially as the story progresses.

That said, the earliest exploration of the biology of shapeshifting that I’m aware of was produced by G. Havers in 1664.  Havers published an English translation of A General Collection of Discourses of the Virtuosi of France, Upon Questions of all Sorts of Philosophy, and Other Natural Knowledge, Made in the Assembly of the Beaux Esprits at Paris, by the Most Ingenious Persons of that Nation (hell of a title).  The “virtuosi of France”, according to Havers, argued, “[f]or otherwise, how should the Sorcerer reduce his Body into so small a volumn as the form of a Rat, Mouse, Toad, and other such Animal into which it sometimes is turn’d” (204).  In other words, in the mid-17th century, they were arguing from a position that employed the law of conservation of mass (before said law had been codified).

Among others, Philip Jose Farmer built on this question in his short story “Wolf, Iron, and Moth” (The Ultimate Werewolf, ed. Byron Priess, 1991).  He writes, “Only the moon saw his hair and skin melt until he looked like a mass of jelly that had been formed into the figure of a man [. . .] The furious metabolic fires in that jelly had already devoured some of the fat that Varglik had accumulated so swiftly” (59).  Nina Kiriki Hoffman does something similar in her story “Unleashed” (The Ultimate Werewolf, ed. Byron Priess, 1991), “Change gripped her breasts, flattening them against her chest, her body shifting to absorb and redistribute tissue” (76).  Obviously, both authors are concerned with the mass and tissue changes involved in changing from a human to wolf shape, and vice versa.

Farmer’s story also touches on the scientific question of energy requirements and use to change.  He writes, “The furious metabolic fires in that jelly had already devoured some of the fat” (59).  Charlaine Harris also plays with this briefly in her Southern Vampire series.  Other approaches have included a strong urge to eat after changing shape, particularly repeatedly in a short span of time, as food and fat reserves are burned to fuel the transformation.

Some authors go a few steps further in linking biology and shapeshifting.  For example, Ilona Andrews states that, at least for Lyc-V (Lycos virus) shifters, there are only mammalian shifters (Magic Bleeds).  The implication is that because humans are mammals, they can only transform into mammals.  Some exceptions are included later, but appear to be either a) non-human species (lamassu) or b) incredibly ancient or mis-identified (an apparent were-croc, which might not actually be a were/lyc-V case).  Others have used this as well, including the webcomic Peter is the Wolf (it’s title a play on Peeter Stubbe, the infamous German werewolf, and “Peter and the Wolf”).

The last element that comes to mind for shapeshifting and biology is the actual reshaping of the body.  Many authors choose to gloss over the change (ex. Pratchett) or gloss over it for some shifters (ex. Rowling for animagi).  But, a few use the change for dramatic or horror effect.  Charlaine Harris, for instance, writes, “It was a sort of gloppy sound.  Sticky.  Like stirring a stiff spoon through some thick liquid that had hard things in it, maybe peanuts or toffee bits.  Or bone chips” (Dead to the World, Ace, 2011, p. 158).  The painful bone reorientation is the key element here.  Likewise, J.K. Rowling describes, in broad strokes, a similarly painful change as Remus Lupin is chained to Ron Weasley and Peter Pettigrew, emerging from under the Whomping Willow.  The change is described as being highly painful previously as well, when Lupin describes his childhood transformations.  These painful shifts are in contrast to the instant, silent, and painless transformations undertaken by the animagi.  I suspect the difference is that in Rowling’s world lycanthropy is essentially a disease (although she switches back and forth between talking about it as an illness or a species), while animagi use a transfiguration spell.

De-Bunking Myths, Seeking Werewolves

For whatever reason, I’ve been seeing a lot of people bemoaning modern werewolf stories, whining that “werewolves have become sympathetic” as if this is both new and bad.

Rather than respond to each individually, I thought I’d do a list of werewolves in one place instead. Because this is an incomplete list, I’m limiting it to European, mostly named, and pre-modern (mostly to demonstrate a point):

Alphesiboeus & Moeris – werewolves in Greece, no ethical commentary given (Virgil, Eclogue VIII, 1st c. BCE)

Niceros’s Soldier – potentially violent werewolf, but no violent action in the story (Petronius, Satyricon, 1st c. CE)

Lycaon – man cursed by Zeus with a wolf shape for crimes against the gods (Ovid, Metamorphoses, 1st c. CE)

Demarchus – one of many werewolves of Arcadia, Olympic champion (Pausanias, The Description of Greece, 2nd c. CE; also mentioned by St. Augustine of Hippo, The City of God, 4th/5th c.)

——— – neutral discussion of werewolves (Isidore of Seville, 6th/7th c. CE)

Alphouns – sympathetic werewolf, prince of Spain (Guillaume de Palerne, 12th c.; translated to English as William of Palerne, 14th c.)

Bisclavret – sympathetic knight-werewolf (Marie de France, “Bisclavret”, 12th c.)

Ossory-Meath Werewolves – sympathetic werewolves, married couple (Gerald of Wales, History and Topography of Ireland, 12th c.)

Gorlagon – sympathetic werewolf, king (Anon., “Arthur & Gorlagon”, 14th c.)

Peeter Stubbe – monstrous werewolf, put on trial in Germany (1590)

Jean Grenier – monstrous, yet sympathetic, child werewolf, put on trial in France, deemed psychosis (1603)

Ferdinand – psychosis werewolf induced by incestuous desire (John Webster, The Duchess of Malfi, 1614)

Wolf – the monstrous wolf-man of Little Red Riding Hood (Charles Perrault, 1697).

As we can see, the sympathetic and monstrous varieties of werewolves have existed side-by-side for well over 2000 years. In fact, the sympathetic werewolf seems to trace back further in history (and pre-history) than the monstrous variety (see Adam Douglas, The Beast Within, for a good starting history of the figure).

The Modern Literary Werewolf

Time for a reblog of the shameless self-promotion. 🙂

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The Modern Literary Werewolf


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