My dog's nipple is swollen. What's the cause, and is it serious?

He may have been licking his nipple which would have possibly made it swell. However it is also possible that this is hormonal problem or even an infection. If the nipple keeps growing, or turns red or hot or starts discharging fluid, then you should take your dog to a veterinarian for an exam.

You can apply a warm compress to it to help with pain and swelling. She will need to go to a vet to have it checked as it may be an infection or a growth. If she is nervous or anxious then i would call and see what arrangements can be made to minimize her stress. Such as medication for anxiety prior to travel or not waiting in the lobby with other dogs and people but maybe and exam room or the car until they are ready for you.

Thanks for using Petco Pet Education Center, formerly Petcoach! At least in these pictures, it does not look severe and I think this could have been from some form of mild trauma. I think it would be ok to monitor him at this point. If this has not gotten better in the next week or so, it may best to have him evaluated by a veterinarian for further assessment and treatment. Good luck and have a great day!

Hi There! Thanks for using Petco Pet Education Center, formerly Petcoach! It probably was due to mild trauma (such as from scratching). Given how it looks, it will likely heal on its own without much treatment if you leave it alone and prevent your pup from licking or chewing at it. Good luck!

I am sorry to hear about Archie. Possible causes for this could include infection, abscess, or tumor. Unfortunately none of these causes are really treatable with at home care. If the area is growing rapidly, is painful or hot to the touch, or your dog is lethargic/not eating/uncomfortable then these are signs he should be seen right away. If he seems unbothered by the area and it isn't growing rapidly, you could try applying warm compresses for 10 minutes a few times a day. If it is an abscess this may help it come to a head and drain. Clean around the nipple well with a mild soap or antiseptic such as Hibiclens in case there is a superficial infection and apply a topical antibiotic such as Polysporin. If the area isn't getting smaller or is increasing in size, then vet care is needed. You may consider seeing if there is a low-cost vet clinic in your area. Some Humane Societies/Animal Protection Leagues/etc. have low-cost clinics for those who cannot afford a full service veterinarian. You can get more ideas on paying for vet care at http://m.humanesociety.org/animals/resources/tips/trouble_affording_veterinary_care.html

There are a couple of things that could be wrong with your dog. She could be pregnant causing her swollen nipples and making her feel ill. It could be that she has mammary tumors also causing these symptoms. If she had puppies recently, she could have mastitis (an infection of the mammary glands). Finally, she could have a pyometra which is an infection of the uterus that is fatal without treatment. Because both mastitis and a pyometra are fatal without treatment, and since I can't see her in person to rule them out, I think it's best that she sees a vet right away. The vet can diagnose what is causing these symptoms and the best way to treat her. Please take her into a vet now. Best of luck.

I have never seen a bug bite cause inflammation of a mammary gland. Swelling is usually from mastitis - some type of infection and/or inflammation got into the teat. Please take her the vet for an exam. The vet needs to see her in person.