I'm currently making a short series of Minecraft and the main topic is werewolves. So I download the Mo'Creatures Mod, together with the Morph Mod and being a transformed werewolf. The only problem is, the werewolf doesn't "drop" a morph and I can't turn it into him. I use version 1.12.2 with Forge.
If you are only interested in the wolf then download the Howling moon mod with which you have to let a werewolf bite you and from there you can transform yourself into a werewolf. You can have a look at the mod again by going to YouTube | Lekopa Werwolf mod | are looking for.
The problem is that the Howling Moon Mod doesn't support the beast variant of the werewolf. Or I just don't find her, but I can only transform myself into the "Steve Werewolf".
Try twitch and it should work.
Werewolf
Aphau utuma werewolf mod This
Werewolf