Radiation is not typically used to treat cats with breast cancer, but it could be beneficial in rare circumstances. The nipples may also start to appear darker or more pink in colour. Published: May 30, A: Kittens should only breastfeed from their own mother if possible. Occasionally, a female cat can develop a very painful infection in one or more of her teats called mastitisand it is most often seen in female cats that are nursing kittens. You'll usually notice a reddened, swollen teatand your cat might be boobw. But sometimes the only sign of mastitis is that the kittens are not growing as quickly as expected. 6, cat breasts stock photos, vectors, and illustrations are available royalty-free for download. See cat breasts stock video clips Mastitis happens when a mammary gland, also called the breast, becomes inflamed.