What is this raw, open sore on my dog's upper lip? Is it serious?

Hello. I’m sorry but it does not appear that any photos were successfully attached to your post. Please try to post and upload the photos again. It would be helpful to see them. These may be hotspots or some other type of infected skin lesion.

Hi there and thank you for using pet coach to address your concern. Based on your photos, I would suspect this to be some sort of irritation or immune mediated disease such as discoid lupus erythematosus. If this does not improve on its own, I would recommend having a veterinarian examine the area so that the most appropriate treatment recommendations can be made. I hope this helps! Please let me know if you have any other questions or concerns.

I'm so sorry but it is very difficult for us to give advice without seeing this spot. Can you post again with some photos? This spot could be anything from ringworm, a bacterial or yeast infection, an autoimmune disease, solar dermatitis, etc. If we could see some photos we can help you better. Thanks.

Hello, thank you for your question about Bear. Based on Bear's relatively young age and the photo that you have provided I would be suspicious that Bear is experiencing a mild bacterial or viral infection in this area. Puppies are often more susceptible to viruses such as the papilloma virus more than adult dogs, this virus typically forms cauliflower like growths in/around the mouth, but certain forms can be more mild and not lead to these signs. It is possible that Bear has a bacterial infection, these are usually fairly benign and self limiting. Another possibility is that Bear is experiencing sensitivity or an allergy to something in his environment leading to this lesion. Some dogs are very sensitive to certain types of food bowls or toys, and can develop these lesion secondary to this. I would recommend having Bear evaluated by your veterinarian so that they can examine the lesion and Bear's mouth. They can discuss the need for additional diagnostics such as an impression smear or gentle sampling of the area. Depending on these findings they can then make recommendations for necessary treatments such as antibiotics. Hope this helps, good luck!

A picture of the area would help greatly here. Just based on your description this could be a hot spot, allergies, or a mass. Please repost your question with a photo up close (take 3 photos if possible) and we should be able to give you a more accurate assessment of what this could be. We hope to hear back from you soon! Take care.

Is there anything she could have chewed on to cause that inflammation in the corners, mainly electrical cords? It seems very raw and blistered but does not appear infected by that picture. All you can do is clean the area with soap and water as any other topicals will just get ingested. If it is not better in a day or so take her to your vet for an exam to see why it is not clearing

I am so sorry but the pictures never attached. If Wally has spots I recommend a veterinarian. If you can re-submit the question again with the photos, that way we can see what the spots look like. Thank you for using Petco Pet Education Center, formerly Petcoach.