I have to admit I suspected tampering with the video too. There’s just something not right about it when it turns its head. Whether its my eye catching something that I can’t put my finger on, or my brain just saying “WTF”, I don’t know.
In my opinion, the problem with it being any known animal with mange is that usually by the time mange progresses to the point that the animal would be hairless, the animal should be weakened and emaciated. This thing still looks to be in fairly good shape, and looks pretty bulky to me.
There was another of these same creatures killed in the same area last year. Around July, I believe. The story from then mentions that DNA tests would be performed, but I was unable to find any updates about the results of the tests.