Oh no Bigpoodle, I am so terribly sorry that this had to happen. This is just devastating. Poor Riley. I wish there were something I could say to make you feel better, but I know there isn't right now. My heart is heavy and sad for you all at this painful time. What a wonderful companion he has always been. I hope these last few days can be filled not with just the inevitable, profound sadness, but with some good and sweet memories too and the knowledge that he will soon not be suffering anymore.
(((Hugs)))