Update: Cody, our chocolate boy was accepted into a clinical trial for a new chemo drug that in theory is supposed to more effectively target osteo cancer cells. He had his first treatment 2 weeks ago. He did great ...no side effects at all (he was great on the Carboplatin too) so I think we have just been lucky. He had an X-ray done on his lungs this past Monday one week post treatment which unfortunately showed 2 more lung mets...All the mets are very small less than 1mm our vet said. We were hoping for no new mets after the treatment but it was not to be. Our vet is still hopeful, His next treatment and x-ray is coming up in 2 weeks so we are keeping our fingers crossed all the mets stay small and no more new ones!! Cody is still his rambunctious, playful self so we just make sure we cherish and love him every single day. I was causiously optimistic about this new treatment and my bubble was burst a liitle with the finding of the new tumors. It's a reminder of just how aggressive this cancer can be so we treat every day as a gift as we should always! BTW.....still no regrets!