We had a problem with a large tumor on our female Rottweilers elbow. I researched everything on the net and came across the castor oil and turmeric remedy. I would apply the castor oil mixed with turmeric and soak a piece of flannel into it then apply over the tumor. Twice a day I would do this for 1 month. The tumor gradually began to open up and it did look worse before it got better. But it shrank the baseball sized tumor down to nothing. It is now all gone. I also only fed her a raw diet. Cancer thrives on processed sugar. If you remove it from their diet it starves the cancer.