For anyone that’s following the sick Bear saga:
The Vet found nothing abnormal. All Bear’s tests came back good. No parasites or infections or evidence of injury. His energy is good and his appetite is good. The high water consumption / excessive thirst that caused the problem seems to have tapered off and I’ll start increasing the time between trips outside today to test his control.
Worst case at this point (aside from misdiagnosis) is incontinence due to his age which can be controlled with meds or by limiting waterbowl access overnight.
Thank you all. The vet’s ‘bedside manner’ did a good job of feeding my paranoia and as a result it was a rocky weekend for me.