I am so sorry for your loss. I am also grieving horribly after suddenly losing my Peanut. We can not blame ourselves as I know that we both did everything in our power to help our little guys. Peanut died one week ago this evening and I have been living with the grief each and every day like a roller coaster. Could I somehow have prevented his sudden attack and death, could I have stayed at work longer and perhaps he would still be with me today? My only solice is looking back at the 4 wonderful years he did have as my buddy and I know that I did give him a life of love that some pups will never have. Take care and if you need anyone to talk to please shoot me a message. Perhaps we can help each other get through this aweful time.