(A update of this post from a few years ago, in light of my discovering that Rabbi Zecharia Wallerstein has an online shiur on this topic.) In Sacred Monsters, I noted that Rabbeinu Ephraim ben Shimshon, one of the Tosafists, wrote about werewolves. But I only recently came across the full text, and I found some additional fascinating material. (I uploaded the original text of Rabbeinu Ephraim on werewolves as a PDF- you can download it
Was Rachel Imeinu Killed By A Werewolf?
Was Rachel Imeinu Killed By A Werewolf?
Was Rachel Imeinu Killed By A Werewolf?
(A update of this post from a few years ago, in light of my discovering that Rabbi Zecharia Wallerstein has an online shiur on this topic.) In Sacred Monsters, I noted that Rabbeinu Ephraim ben Shimshon, one of the Tosafists, wrote about werewolves. But I only recently came across the full text, and I found some additional fascinating material. (I uploaded the original text of Rabbeinu Ephraim on werewolves as a PDF- you can download it