What's this bump or lesion under my 3-month-old puppy's mouth?

It is hard to tell but this appears to be a possible growth. Growths in puppies ar usually either papillomas or histiocytomas, both benign masses. I would suggest monitoring this mass for the next week or so. If it starts to get bigger, then its best to have your vet examine it and perhaps test it to ensure it is only a benign mass and nothing to be concerned about. Sometimes an anti-inflammatory medication is needed to help with the irritation that these cause. Also if Loki begins to scratch at it, its best to place an e-collar to prevent her from irritating it further. I hope everything works out well for your pet Loki. Best wishes and take care.

The photo is a little fuzzy so its hard to say. It may be an oral papilloma, which is due to canine papillomavirus. Typically these resolve on their own, but many more may pop up over the next few weeks on his lips and in his mouth. It could also be an inflamed hair follicle or a skin infection. If its not resolving over the next few days to weeks, or if it seems to be getting worse or causing him discomfort, please take him to your vet to be evaluated. Here is an article on canine papilloma virus. http://www.pethealthnetwork.com/dog-health/dog-diseases-conditions-a-z/oral-papilloma-virus-dogs Thanks for asking PetCoach!

It may just be a little boil that formed due to a mild infection or even trauma from his tooth. If it isn't bothering him then I would just keep an eye on it for the next 2-7 days to see if it resolves on its own. Most of the time these do. If it doesn't then have your vet take a look to see if treatment is needed.

Thank you for using Petco Pet Education Center, formerly Petcoach! Kona does have what appears to be a small, round, red and slightly bloody bump on her lip margin. This can be caused by an infection, which may have resulted from a small cut. While Kona is pretty young, it is possible that the bump is a small tumor, and it can be removed to determine if it is benign (not harmful) or malignant (likely to spread). It is concerning that the bump has gotten bigger over time, so I recommend having her seen by a vet. You can get her an E-collar or "cone" to prevent her from scratching or rubbing the area. I hope this helps!

Poor guy! Your can try this: It won’t hurt him if he licks it off. However, if it’s not improving in 5 days or so, I would recommend that you schedule a recheck with your vet. I’m worried he may need antibiotics, as he may have a deep skin infection. If it continues to be a problem , a skin biopsy may be recommended. Thanks for asking PetCoach!

It looks like it may be a mole. If it continues to grow, get irritated or bother Leo I recommend taking him to a vet. If you would like to know definitively what it is they can always take a sample and have the pathologist evaluate it. Thank you for using Petco Pet Education Center, formerly Petcoach.

No need to worry too much yet. In such a young dog it is highly improbable that anything too terrible is wrong. In all honestly, it is very hard to make a diagnosis of dermatologic issues without actually feel the lesion, and / or collecting some diagnostic samples. At first glance, they look like eosinophilic plaques (otherwise known as rodent ulcers), which are actually much more commonly seen in cats. Since you are seeing these lesions on both sides of the mouth, it's also possible that this is something anomalous but normal in your dog. Another possibility is that your pup could have bit onto something that cause some irritation, and it is now causing something wrong symmetrically. If the areas aren't getting large and are not bothering your dog, my advise would be to leave things alone for the time being to see if there is any change. However, it wouldn't be wrong to take your dog to the vet now to have him checked over. Hope this makes sense!