Hi I just read your story about your dog and the nose bleeds. I am so sorry for your loss. I found your story because I googled "dogs with nose bleeds" and found your story. My 15 year old Cocker spaniel/shelty mix has had the same symptoms as yours. We've done the blood work and everything came back fine. The next suggestion is the rhinoscope, however my husband and I are very hesitant as she is old and what if it doesn't work also it is very expensive. I am curious to know if your dog would sneeze a lot? Our sneezes so hard she hits her head on the floor and just yesterday she sneezed out a massive piece of something, it literally looked like the inside of her nose.
Any help is greatly appreciated. She is a big part of our family and we do lover her dearly.