I was recently told that the condition we've been watching in Pucci's kidneys is Protein-Losing Nethropathy. While it develops slowly, it is a serious issue. We went to see a Specialist this morning. This is the report that I sent to MY doctor - bless him - he's concerned about Pucci because he knows how much Pucci means to me. Pucciâ€™s ultrasound (I didnâ€™t view the procedure) doesnâ€™t seem to show anything horrible â€“ heâ€™s got some calcification in his kidneys and some striations normal with an older dog, his liver is smallish but looks OK, he has some sludge in his bladder consistent with a dog his age. At this point, the Specialist isnâ€™t going to do a core biopsy â€“ instead, he's changing Pucci's food and adding Omega 3 fatty acid to his meds. Weâ€™ll see how Pucci does with that before the necessity for the biopsy â€“ he doesnâ€™t want to put a dog Pucciâ€™s age under anesthesia unless absolutely necessary. YEAY!!! I can return to giving Pucci a little bit of Turkey for lunch (low sodium, no nitrites) â€“ Pucci scarfed it down happily. In fact, the Specialist said it was good to let Pucci have a little bit of protein to make up for what he loses through his kidneys. Thank you for your concern.