Question: As we all know, werewolves are humans that are transformed into ravenous flesh eating monsters. Some are [sentient](http://en.wikipedia.org/wiki/The_Wolf%27s_Hour), but most appear to be feral hunters of humans. Is there such a thing as reverse Lycanthropy? If so, what is the first story of an animal cyclicly turning into a human similar to the way humans turn into werewolves? I'm looking for the earliest example from the movies, TV, books, comics, or legends.

Answer: 
In the Terry Pratchett Discworld Novel Reaper Man, the character [Lupine](http://wiki.lspace.org/wiki/Lupine) is a wolf who, under the full moon, turns into a wolf-man.
If you count role playing games, then yes. Both the 1st Edition of Dungeons and Dragons and in more recent versions, there were creatures known as [wolfweres](http://en.wikipedia.org/wiki/Wolfwere_%28Dungeons_&_Dragons%29). These were wolves that gained the ability to turn into humans. I don't know if they have any precedent in lore before that time.