A Werewolf or Werwolf or even"Lycanthrope" is a mythical human with the ability to transform into a wolf or humanoid wolf, it is created when a human is bitten or scratched by another werewolf, or even put under a curse.
A werewolf is a human who is cursed, bitten or scratched by another werewolf (similar to becoming a vampire), willingly or not this transforms when the full moon is present. It is a popular belief that werewolves get get super human strength and speed, and that their senses surpasses that of a normal wolf or man. Other ways of becoming a werewolf is to eat meat of a lamb that was killed by a wolf or to walk in the footprints of a wolf for a longer time.
Another popular belief is that the only way to kill a werewolf is with a silver bullet (usually to the heart), there are also non-fatal cures to being a werewolf. One cure is making the werewolf tired because when it gets tired, it collapses and reverts back to human form. However, this is only temporary as the human would turn back into a werewolf during the next full moon; in addition, he/she would lose all his/her memory of when he/she was in the werewolf state.
Werewolves are usually portrayed as huge, hulking, hairy monsters with a humanoid figure that walks on two legs and can even talk. Sometimes werewolves are portrayed to be more beast like, walking on all fours, snarling, and losing all sanity.