Harley ‘s internal damage was just too much , they don’t know where the kidney damage came from , chemo they were using should not have caused it. The cancer had spread to his lungs . It is hard to let him go , I console myself with the fact that he will be released from pain and it is no kind of life. He was such a good dog ! He lived with lots of love it will be hard to get over. Thank you all for your messages of love and support. I wish you and your pets all the best on your journeys.