He was only a little over a year old. I suspect he had Nidovirus, relapsed and his tiny body was just ravaged. The antibiotics did nothing. I had diagnostic tests scheduled for Friday morning but by Thursday around 2:30AM I and a vet decided that after hearing him retch, seeing him constantly struggle for air, hearing him gurgle, hearing the fluid coursing through his lungs that euthanasia was the most humane option. He was heavily sedated and put to sleep later that morning. Even in the oxygen chamber, he couldn’t relax and was holding his head upwards so as to breathe easier. He had been doing that for a couple days.. I was told to monitor him on the 25th and he declined completely within two days. I miss him terribly, I am so, so miserable. Just wanted to vent. Rest In Peace to my baby Udon.. 💔