I just did some research, you said you are interested in a homeopathic treatment? Try supplementing vitamins C and E. People have had dogs with bad cancer and one month to live, and they gave their dogs these vitamins. The dogs had recovered in two weeks! These vitamins boost your dog's immune system so it can get rid of the cancer itself. Both vitamins also have strong anti-cancer properties. Buy human tablets, and for E, give the amount suggested for adult humans. For C, feed to "bowel tolerance". This means start with 1/2 tablet, then one tablet, increasing the amount every day until he gets a little diarrhea or gas. This indicates the body is geting more C than it needs. Reduce to the previous dose. Every week up the dose again, to make sure his needs have not changed. I know everyone says dogs make their own C, and they do, but it is not enough when the dog has cancer. You may also want to look around and see if you find a holistic vet in your area. They treat the cause of the problem, not just the symptoms. They also usually use less invasive, painful treatments, as well as the fact that natural remedies don't have side effects, intoxicate the liver, or make their hair fall out or cause behavior changes! Hope this helps!