What to do if my male dog's nipple is big, red, irritated, and itchy?

This looks like a mild skin infection/inflammation. I suggest you use these medicated pads on it. If after about a week to 10 days of use, the lesion is not better or looks worse then your vet should examine him. ( https://www.allivet.com/p-5393-douxo-chlorhexidine-3-ps-pads-for-dogs-and-cats-30.aspx )

That looks uncomfortable. It's impossible to know at this stage if the nipple is infected or if the skin on/around the nipple is inflamed and this is causing the enlarged size. The block dots could be flea dirt, blocked pores or debris Patrick has laid in. Your best option is to have Patrick examined by the veterinarian and to get medications to help the itchiness. These lesions could be several things including fleas, allergies, skin mites, bacterial infection, ringworm (which humans can get) or endocrine disease. If you can't get him in to the veterinarian, there are a couple things you can do at home and they can help but they may not address the underlying cause. You can try adding in an omega 3 fatty acid supplement for dogs, this can help improve the skin health. You may also try changing his diet to something like Royal Canin or Nutro as they are aimed at skin health. You can wash the lesions once a day (not his whole body, just the lesions). Also protect the area from trauma by having your pup wear an elizabethan collar at all times. If the lesions do not start improving within a week or if they are getting worse, have him examined by the veterinarian. I hope this helps and please feel free to post any additional questions.

I can see some irritation of the skin just below the nipple, but the nipple itself doesn't look diseased. I would recommend trying a hot spot spray from you local pet store to see if you can resolve the itching and irritation of the skin. However, if it does not improe then its best to take Loki to your vet and discuss more treatment options for his apparent skin allergy. I hope that Loki's skin improves soon! Bset wishes and take care. : )

The area around the nipple appears to be a little red and irritated. If Bindi is licking the area it may be causing her some discomfort. Other than the slight redness, which may be normal for her, I do not see anything you should be concerned about. I hope this helps. Thanks for using Petco Pet Education Center, formerly Petcoach. Best of luck.

I can see that Sir Nicholas has a small, raised, dark lesion by his nipple. This can be a mass under the skin, which may be malignant (likely to spread) or benign (unlikely to spread). I recommend having this area looked at by a vet. They will be able to either remove the mass completely and determine exactly what it is, or take smaller samples using a needle. I hope this helps and that Sir Nicholas is doing well!

If you are seeing wounds or there is a nipple that is scratched and bloody, it may indicate that your dog is having an issue such as an [allergy](https://www.petcoach.co/dog/condition/canine-allergies/) that is causing [itching](https://www.petcoach.co/article/how-to-prevent-itching-in-pets). Bacterial infections can also cause your dog to itch more. Scratching to the point of bleeding is not normal and should be addressed by your vet. Discuss [allergy testing](https://www.petcoach.co/article/allergy-testing-immunotherapy-in-dogs), [food elimination trials](https://www.petcoach.co/article/food-trials-for-allergies-in-pets-what-to-expect), hydrolyzed diets and antihistamine use during the visit. He or she can provide allergy relief, recommend a diet change if [food related](https://www.petcoach.co/dog/condition/food-allergies/), or provide medications to treat any infections. You may want to place an Elizabethan collar (cone) or T-shirt on your dog to prevent further scratching to help the wounds heal without introducing more bacteria, until your vet can take a look.

If this is an abnormal color change, I recommend to have her examined by the veterinarian. It could indicate an infection or developing mammary tissue. It could also be related to itchy skin. I hope this helps.