Help! My puppy's nipples are red and irritated. What's the problem?

I don't think this looks too concerning but if you are worried you should take him to your vet for an exam. If you want to try something on him at home, I would suggest you try this product. If no improvement with using this then he should definitely see your vet. ( https://www.petco.com/shop/en/petcostore/product/vetericyn-plus-hot-spot-antimicrobial-gel-for-dogs )

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.

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.

This is probably caused by an allergic reaction. first of all make sure you de-flea Loki regularly every month with a high quality spot on (ex. Advantage) as fleas are by far the most common reason for these reactions. If the fleas are not the problem, it could be an allergic reaction to food or an environmental factor. this is more complicated to treat and will sometimes require medications such as Steroids, anti histamines or cyclosporin in order to stop the allergy.

Congratulations on your puppy! It is difficult to tell for certain from a photo, but it looks as though Mollie could have a pustule located adjacent to her nipple and that is what you are seeing. this is a little spot of infection under the skin (like a whitehead pimple in people). This isn't uncommon in puppies (we call it puppy pyoderma) and we often treat with a medicated shampoo or topical antibiotic in mild cases. I would wash the area with a mild soap and apply a triple antibiotic ointment for now and schedule an appointment with the vet to have it looked at to be on the safe side, as I said it is impossible to say for certain from a photo if this is exactly what is going on.

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 )

This is probably caused by an allergic reaction. first of all make sure you de-flea Alvin regularly every month with a high quality spot on (ex. Advantage) as fleas are by far the most common reason for these reactions. If the fleas are not the problem, it could be an allergic reaction to food or an environmental factor. this is more complicated to treat and will sometimes require medications such as Steroids, anti histamines or cyclosporin in order to stop the allergy.