Wolfman!!!

Wolfman is a mythological monsterwith the ability to transform into a wolf or an anthropomorphic wolf  like creature

                The transformation of this beast is often associated with the appearance of the full moon

It is supposed that if a wolfman bites you, you can be one of them, you will transform every full monn ofr the rest of your life.

In this age, we doesn´t believe in this creatures any more, there has been a lot of movies of this creature, this is an example of a wolf transformation