Every Animagus is required to register with the Ministry
of Magic at the Improper Use of Magic Office. This registration
includes revealing one's animal form and one's distinguishing markings.
The Register is available to the public.

The penalty for failing
to register as an Animagus is a sentence in Azkaban[2], though the
length of time is unknown. Rita Skeeter gave up an entire year of
writing articles, her main means of livelihood, so that Hermione
Granger would not turn her in as unregistered, and consented to writing
an article free of charge at Hermione's request.

Due to the
complexity of the magic involved in becoming an Animagus, they have
become very rare. There was a total of seven registered Animagi in the
twentieth century. It is also partially because of this complexity, in
addition to the danger involved, that Animagi are required to register
themselves.
edit Known Animagi

Code:

[font=Matisse ITC]Name:
[spoiler]Picture AND Description:[/spoiler][/font]

Age:
How you learned to transform: (Has to be reasonable and believable)

------------------------------------------------------------------------------------------------------

Sandor von Wulf

Spoiler: