Sounds like it may be circling disease, I have see two that had that. I had one tested at the PA dept of Ag lab in Hbg.
CWD symptoms----How can I tell if a deer or elk has CWD?
Animals infected with CWD do not show signs of infection for 12 or more months; many infected animals look completely healthy. Late stage symptoms of CWD-infected animals include an extreme loss of body condition; excessive drinking, urination, salivation, and drooling; and behavioral and neurologic changes such as repetitive walking patterns, droopy ears, a wide-based stance, and listlessness. Some animals lose their fear of humans and predators. There is no known cure. It is important to note that these symptoms are characteristic of diseases other than CWD.
When you are up to your butt in alligators, it is hard to remember your intent was to drain the swamp. Stay focused!