This evening, Diablo crossed rainbow bridge. We are not sure what caused it, he had a perfectly normal check up with the vet two weeks ago, and an active weekend complete with a walk on Friday and catio time on Saturday and Sunday, treats from me this AM, but he went downhill fast today. He had sepsis and was in shock as a result of rupturing his bowel. RIP Diablo, you will always be the best boy, and my soul kitty. See you on the other side my lovey.