After a few days of what seemed like recovery, Grendel started losing weight again. Quickly. We had long days marked by visits to the vet and long nights where I was sure he wasn't going to be with us in the morning. But he kept pulling through, which kept my hope up.
He passed last Saturday night. We had a sunrise burial on Sunday.
We are overwhelmed by the love that has been pouring in from around the world. He was an international superstar. Thanks everyone.