Prolouge

As punishment for Lucius Malfoy's failure to show up among the Death Eaters on the night of the Dark Lord's return, Lord Voldemort tries to assign Draco something worse than death: Lycanthrope.

...

Draco doesn't understand how Harry could love him, a werewolf. One who's thirst for human blood is so powerful. Who could love such a broken creature?

Lycanthrope:

1) a werewolf; a monstrous beast.

2) a disease that causes one to take on the form of a wolf every full moon.

Lykanthropos: Greek - a wolf-man

JK Rowling owns Harry Potter, but I hold no respect for her at the moment.