Three years ago I got my full grown (3 to 5 yr. old) mixed breed dog from the humane society. He had been rescued from a kill shelter. He's medium size and appears to be a mixture of some sort of hound/terrior/sheltie. He was obviously abused in the past and we worked through many issues. He has been my constant companion and has helped me through my darkest days of treatment.Looking back prior to my diagnosis I can distinctly remember my dog Hecter sniffing at my ears and sometimes my nose. On several occasions as I bent down petting him, he would sniff my ears in a strange sort of way as if picking up on a scent which I thought was so odd. He did it so often that I kept cleaning my ears out thinking he could smell wax. Now in hindsight I wonder if he detected the cancer but was unable to tell me. During treatment he stopped that behavior of sniffing at my ears and nose. Now I purposely get close to his face to see if he reacts to any scent of mine. No reaction from him. This may sound weird but I try not to stress so much before a check up because my dog is not alarming me. I've even considered putting him through some sort of training where he would be trained to pick up on cancer. Has anyone else experienced anything like that from their animals? Barbara