Sorry, I had to step awayfor a short while and it had been almost an hour since I had requested more information. Growths or lumps can occur anywhere but when they are in the area of the breasts, there is a chance of a mammary tumor or breast infection.
You can read about both of these conditions here:
It is also possible if the breasts hang that she may have received a puncture type wound that healed on the outside but bacteria multiplied under the skin leading to an abscess. These are frequently more fluid like. You can read about those here:
Abscess can occur anywhere. A lump or growth is hard to diagnose even with an office visit/ Many lumps are not painful or bothersome. Any lump found on your animal should be tested to determine if it is a cancerous or benign lump or infection. Your vet may want to perform a fine-needle aspiration or other appropriate test if it isn't an infection. It is performed quickly and allows some of the cells of the lump to be evaluated by the veterinary pathologist. This test will allow the vet to determine the nature of the lump and take the necessary steps to remove it. Some vets will leave it alone if it is not serious. If it is an abscess, he may just drain it and prescribe antibiotics. Lumps that are solid feeling, feel attached and fast growing should be checked as soon as possible as these are the ones that are more likely to be serious.
This site will give you more information on all kinds of lumps and growths.
I hope this information is helpful to you. If you would like any additional information or have more questions please don’t hesitate to press the reply to expert or continue conversation button so I can address any issues you still have . If you do find this helpful, please take this opportunity to rate my answer.