As much as I am liking the look of this mod, I'm afraid I have to report a bug with it. I am finding it impossible to get any sort of tail other than stubby, even with the mutation menu. I just get spammed with the message that I have lost the stubby tail and have gained a mutation called stubby tail. For reference this was the only mod plugged in at the time of the testing. Game version: 0.C-18874-g3b8f09c.