Whoever you get to do it make sure you mention the whole head including the jaw bone.
I had some Roe done recently, I asked for head to be boiled, did not mention anything about the jaw bone as I expected it to be part of the head.
I intended to sell them in Germany where they prize the lower jaw for the pre molar wear to assess age in conjunction with the antler.
When I collected them the jaw bone was disposed of so now all I can do is cut the skull and hope somebody will accept them as wall ornaments.