Animagi are witches or wizards who have learned how to transform themselves into animals at will whilst continuing to be able to think as a human would. Several important facts about animagi are:

• The transformation doesn't require a wand.
  
• Animagi whilst animals are immune to werewolf bites.
  
• The ability is extremely rare to the point there were only 7 recorded animagi in the 20th century. It is considered extremely risky and very advanced magic.
  
• Each animagus has one specific animal form uniquely suited to the individual.
  
• Information on Animagi is taught to Hogwarts students during their 3rd year.
  
• Animagi may have the ability to communicate with other animals.
  
• All have some of their human characteristics embedded onto their animal self.
  
• Clothing disappears during transformation, but reappears once human again.

Very little is known about the process of becoming an animagus, but it is known that one must hold a mandrake leaf for an entire month before using it in a related potion, and that they must repeat a set incantation daily. Otherwise, it is an individual process that varies from individual to individual. In all cases, it is difficult, dangerous, and time consuming.

Once a potential animagus is ready to actually become an animagus, the danger is at its peak. One cannot practice becoming an animagus -- the magic involved is all or nothing. As such, the first transformation is critical. Not only is it when you discover what your animal form is, but it is also when the potential animagus may fail ... and failure can be a lot nastier than just "nothing happens". Some of the possibilities include death, becoming permanently stuck between human and animal forms, and being permanently stuck as an animal.

If a wizard successfully becomes an animagus, he or she has no control over what his form will be and no way to know before completing the transformation. The animagus's form is determined by their personality, and it cannot be changed once it's established. Whatever animal best represents the new animagi -- be it a centipede, a lion, or a house cat -- is forever their only animagus form.

On Charming, we require that apped animagi work on it for at least four years, and that developed animagi do so for at least two years IC. A wizard who is not exceptional would likely take even longer if they succeeded at all.


Frequently a wizard's patronus and his animagus form are the same animal, taking the shape of the wizards "inner animal". This, however, is not always the case. Although a person's "default" patronus is the same as their animagus form, a patronus can be changed through love to take a form that represents either a person's true love or another person (such as a parent) that gives the wizard a strong sense of safety or which represents the wizard's happy thought.


An animagus is required, by law, to register their animal form and distinguishing at the Improper Use of Magic Office in the Ministry of Magic. The penalties for not registering is an unknown sentence in Azkaban. The main reason for registration is for tracking and ensuring that each user is law abiding and not abusing their abilities.

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Documentation written by Emily and Jen exclusively for Charming.
Updated by Kayte in June 2017
Many thanks to the following sources:
Harry Potter Lexicon: Animagi
Harry Potter Wiki: Animagus
LeakyPedia: Animagus
Wikibooks: Muggles' Guide to Harry Potter/Magic/Animagus
Wikipedia: Magic in Harry Potter