You're welcome!
As I said before, I don't mind questions at all!
Feel free to ask them^^
Sure, most of them are in the same area as the transformations themself.
-Fox is in the forest of begining, the hardest one to find if you ask me. It has to do with the red gates you can find in the forest.
-Wolf may not be in the public build yet, can't remember if it was added in 0.9 already but it also is the shortset one of all of them.
If it is already added, seeing it only required to lose in the wolf story where you need to hold out against the time.
-Skunk is in the desert, you need to repair the broken key for accecing that area.
-Demon is in the Cursed Coin quest, it can only appear if you do that quest "too early", because of taht it is easy missible until full release.
-Also forgot that rabbit also has one, can be found in the rabbit burrow.
Hope this helps^^