Spotted Calamity Jane, my Dalmatian, was 3 1/2-years-old when she was determined to have breast cancer. I spotted this when checking her breasts after she was near completion of breast feeding her litter of 11 pups. At that time my vet was not concerned that the little marble sized lump would turn out to be cancer thinking it was probably where a pup had bit her harder than normal while nursing.
I had already made the decision to have Cally spayed after this one and only litter, so I gave the go ahead to have my vet remove the lump in her breast and biopsy it for safety. We were all shocked to find out the results from the tumor biopsy was indeed cancer. I questioned whether chemo or any other kind of treatment was necessary and my vet felt like all of the lump had been removed and that there should not be any alarm for it to grow or spread.
