Dog has painless groin bump. What is it? Should I call the vet?

That looks like a mild skin infection of some kind. I would keep an eye on it and get it looked after by your vet if it doesn't improve in a day or two or gets worse. They'll do a physical exam, check the lesions, maybe look at some of the material from the bumps under the microscope to see if they can identify the cause and, based on these results, be better able to recommend a treatment plan.

Hello and thank you for contacting Petco Pet Education Center, formerly Petcoach. The area looks bruised and angry. You should clean the skin with antiseptic solution twice daily for 3-4 days (for example 4% chlorhexidine). If the bump / blister ( it almost look like inflamed nipple on the picture you posted) does not get better or if it starts to bother Apollo, you should take him to your local vets for an appointment

This looks like it could be an insect bite or sting, or a tick bite if they are in your area. Skin infections can also occasionally start this way. If you start to see more lesions similar to the one above, or if this bump begins to increase in size or have any discharge I would recommend having it examined by your veterinarian. If it is an insect bite it should be gone in the next 7-10 days or so. Monster is a handsome guy!

This bump looks like it could be a hair follicle or infection, insect bite, or a skin growth. If it is not going away in 5-7 days, seems to be growing larger, or if it seems painful or itchy you should have your vet examine Yogi.

That looks like an infection. It could be bacterial, mites, allergies, a foreign body in the skin or yeast infection. At home you can wash it daily with an antibacterial soap (rinse it well). Make sure he is not licking or scratching it (use an elizabethan collar if needed). If it is not getting better or if it is getting worse within a week, then take him into the vet for an exam. I hope this helps!

I'm not sure from the picture if it's just the mass the side a little bigger than your thumb nail, or if the entire 6 inch round area around the main bump is red. Either way, I would be worried about a growth first and then perhaps an insect bite if you've only noticed it today. Young dogs can have a type of mass called a histiocytoma that is benign and goes away on it's own eventually. I would recommend a vet visit if it's growing in size, just to be on the safe side.

Ouch! That irritation can be a number of things, including an allergic reaction, injury trying to heal, infection from bacteria, fungus, or yeast, and more. Since it can be so many different things, a vet visit in person is best. It's also a good idea to place an Elizabethan (cone) collar on Alley to keep her from licking and chewing the spot to see if that helps reduce the irritation. Keeping the area clean and dry can also help. If the spot doesn't seem to look better in 24 hours, worsens, is oozing debris or seems painful/bothersome, or is causing Alley distress, then a vet visit is best to have the area looked at in person and a sample taken to check for the underlying cause. As some fungal infections can also transfer to other pets and people, it's a good idea to wash hands and clothing after handling it as well.