Travlr, sorry to hear that. However, I know how you feel. The first deer fawn with a very bad underbite that grew to have a normal bite in two weeks totally blew my mine. I was told by three veterinarians that I had consulted about that fawn that there was absolutely no way to "fix" an underbite on a grazing animal except to do an operation and saw a piece out of the lower jaw and then wire the jaw bone together so the jaw bone would heal and match the upper jaw. That was not a possible solution. Apparently fortunately, the fawn had symptoms of intolerance to milk. I had found while raising other newborns with milk intolerance or a sensitive digestive system, that putting the Calc. Phos. tablet in the milk after warming it greatly helped them digest the milk, so the newborn mammal, whatever species it was, could drink and digest the milk without having a reaction like obvious stomach pain or diarrhea. I had 9 fawns to feed several times a day, and since 3 vets said the fawn would have the underbite for life, I wasn't checking her bite to see if it had changed and even failed to notice that she looked different. Have you ever tried giving bottles to 9 fawns that all want to eat immediately? When a fawn was two weeks old, I began teaching it to eat three-way grain by holding the grain in my hand and putting a small amount in its mouth. So I was teaching the little fawn with underbite to eat the three-way at two weeks of age and when I was putting the grain into her mouth, I saw that she no longer had an underbite. I checked her bite several times, because I couldn't believe she had a normal bite, and then I checked it again just to make sure my eyes were working. Then, since she did obviously have a normal bite, I began trying to figure out how something that three veterinarians told me could never happen had happened. The only thing I could figure out was that the Calc. Phos. tablet I was putting into her milk each feeding had somehow stimulated the upper facial bone/s to grow, resulting in her having a normal bite. So, I began giving any fawn, goat kid, bird hatchling, or other newborn with an underbite the Calc. Phos. tablet in their milk or bird food. Then I gave the Calc. Phos. to a neighbor girl to use on her foals, who over three years had three filly foals born with underbite and to another neighbor to give to the beef calves he bought cheap to bottle raise because they had WCS (the WCS calves all had an underbite). The facial bones of all wild animals I received for care, my goat kids and a neighbor's goat kids born with an underbite or an overbite, the three filly foals and all of the other neighbor's beef calves (except the one he got for free that was almost dead - it died) grew to normal and all of the youngsters had a normal bite for the rest of their life. All of the deer fawns born with an underbite that were raised by their mother, all of the other foals that were born here in our area with an underbite, all of the untreated beef and dairy calves and goat kids born with an underbite, retained the underbite for the rest of their life. The underbite prevalence on 292 hunter-killed white-tailed deer in Montana checked by an independent biologist in the years from 2006 through 2021 was 27%, with 14% overbite and 59% normal. All of those hunter-killed deer were adult animals, so in the wild, the underbite or overbite they were born with did not just somehow grow to normal, because they still had the birth defect as an adult. Maybe you have some other explanation for how the animals that were given the Calc. Phos. as newborns (or hatchlings in the case of the birds) had their facial bones grow to normal and no others did. I could never come up with one, even after constantly being called wrong, a liar, stupid, just a woman (that one really made me mad) and pretty much every other name in the book. As I already posted, the children with underbite whose parents gave them the Calc. Phos. also had their facial bones grow to normal and then had a normal bite. That is about all I can say, except that mule deer, pronghorn antelope, moose, bighorn sheep, elk and mountain goats all have a fairly high prevalence of young born with an underbite and some young born with an overbite. Hunter-killed pronghorn antelope (188) checked between 2006 and 2021 had a prevalence of underbite of 66% and overbite at 11%, with only 28% normal. These were checked by a biologist who graduated from the University of Montana with a biology degree. Unfortunately, underbite and overbite only "magically" grow to normal when treated with Calc. Phos. which can't possibly work according to almost everyone except those who have seen it work.