A Purim Torah question on Mi Yodeya asked: how can a Jewish werewolf observe Pesach and other holidays that fall on the full moon? I answered:
I've heard conflicting rumors about the characteristics of werewolves. For purposes of this question I'm going to go with the common modern-day interpretation: a werewolf undergoes involuntary transformation into wolf form at the full moon, losing most of its human instincts, and typically hunts and gorges on something before returning to human form in the morning with few if any memories. If you had some other kind of werewolf in mind, you should specify.
All of these holidays will pose problems for our werewolf because the full moon rises at sunset, which is before festivities can be concluded (or in some cases even started), but his transformation into wolf form commences with the appearance of the full moon. If you follow the minority opinion that it's the sight of the full moon that does it then you might be able to prevent transformation for a time, but the majority seem to hold that the transformation happens at moonrise with or without consent.
One possibility is that he's not obligated in mitzvot while in wolf form (because only human Jews are obligated). If he is obligated, though, he's going to face some challenges: Read more…