Either Bob does have liver failure or there is a combination of too little too late in treating his infection and I have determined that it is time to end this. At this point he has no energy and his eyes were closed with his head down and in much the same position as when I left for work when I walked in this evening. He looked up when I "made" him by touching after seeing that he was breathing. Shortly after that he put his head back down. I will be calling the vet when her office opens in the morning.