Why is there a large lump under my cat's mammary glands?

Answer by  azkc (59)

The lump may be caused by hormones due to the recent birth of her kittens. Make sure that it is not causing her discomfort by palpating it.

Answer by  PaintedRoadkill (504)

This sounds like she might have a tumor growing on or around her mammary glands. I wouldn't worry with it until she gets through giving milk to her babies.

Answer by  bravesfan (61)

These lumps can be something as simple as engorged mammary glands, or something as serious as mammary tumors. I would lean more toward the first since she is still nursing.

Answer by  Rathjinngmailcom (234)

Swelling of the mammary glads is very normal when lactating and is due to hormonal changes found in all mammals.