My dog had a blood red tumor on her torso and I treated it once a day with a teaspoon of tumeric in one tablespoon of blackstrap molasses. Then I rubbed cold pressed castor oil on it and let it soak in for five minutes. The tumor looks like it is drying up but the dried looking part looks black. It is almost gone and I did have it checked to make sure it was cancer free by a vet. Is this discoloration normal?