A fully transformed werewolf resembles an actual wolf, with fur and a wolf's nose and mouth.
Werewolves have their transformations only one night a month, during a full moon.
Werewolves don't remember anything that has happened after they have transformed.
Werewolves often have strong sexual desire in the days prior to a transformation.
For a human, the transformation itself is a painful process in which several vital organs begin to shut down.
Werewolves cannot cross bodies of water.