As simple as the title.
Teeth and Mouth layers do not support Canine2 head
You can try it yourself. I cycled through all heads, and they do not work for Canine2.
This kind of sucks, because I deleted my own teeth and mouth textures for Canine2 lol so now im going to have to re-create it for now.
Oh and a bonus bug!
Something odd is happening to the underside of this character
His entire, uh... taint is jumbled up, and I noticed that my BallsSheath INFLATED options have gone back to default positions and size.
Maybe the two are related? Sorry if this is vague, I have no idea what caused it. Will investigate.
Investigation is... complete?
Jumbled taint is caused by M_muscular body type and the entire taint is related to PelvisScale on BoneOptions.
Additionally, anything else affecting the ass like tweaks affect the taint, further jumbling it around.
Glutescrease in particular makes it odd I think.
But the biggest culprit has to be how PelvisScale pushes the taint out.