I've got a follow up question for this thread.
In a game for 5th level characters I'm going to be running several types of Lycanthropes will be involved (Were- -rats, -boars, and a -tiger).
The PCs overhear other patrons of the inn and tavern talking about the strange behavior of town residents. The townsfolk claim to see their family members leaving their homes late at night and not return until the morning. Once they have returned, they have no memories of leaving their homes nor what they did during the absence. Additionally, bosses are complaining about those under their employ being much more tired than usual during their day-time work, although their workers have no idea why they are so tired.
What would be the Knowledge (Arcana) or (Religion [religion makes sense IMHO]) DC to identify that the townsfolk who are leaving their homes and returning without memories of the night's events are lycanthropes?
I was thinking of putting it at DC 25, by using the "Identify a monster's abilities and weaknesses" as a base with 5 being their CR and adding an additional +10 since I would rather not have the PCs realize what's happening unless they roll incredibly well, since up to this point none of the PCs have had any experience with lycanthropes.
Think that's the right DC to identify the townsfolk as lycanthropes based off of what they overhear?