The thing I'm confused about is that they are not attached to the actual mammary glands- they move easily under the skin. Several are very hard- like little pebbles glued together- and one is like a round soft lump- moving directly under the skin. they are not invasive. The dog was spayed many years ago and is in otherwise good health. I know they say Conium for mammary tumors but are these mammary tumors? And I wonder if these are fibromas, or adenomas or neither? Some say use bloodroot but otheres say it's poisonous . I'd like to be sure of my footing before I proceed. Knowing exactly what the lumps are classified as would help .