Yes, I am aware of that, however, it is very easy to tell the differance between blacktail and muledeer, especially in areas where they overlap. If you look at the buck in the picture, blacktail feature are easy to ascertain. I have watched this buck for years, I have pictures of him in the velvet as well. The buck is a brute and he is mean. He has very good genes, and has past them on to his son. The deer has a very small head, and wights is about 150, with the hooks he's probably right at 30", I have been within 15 yards of him. I am trying to find his sheds. Does not matter what you do, there is always somebody who thinks they are sharper that the rest.