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Lentigo on a daschund.

Species: Dog
Breed: Dachshund
Age: 5-8 years
Dear Dr. Marie,

I just recently discovered these black dots on my dogs chest when I was clipping his nails. I have touched them and they are smooth to the touch, not coming off with a gentle rub. Looking around online I found something that may be close "Acanthosis Nigricans". However, Howie isn't the skinniest Dachshund, but he is not the biggest by any means. Any ideas?

By the way Howie is 5 years of age.

Here are some pictures I uploaded to PhotoBucket:

Howie standing:
black spots on belly

Howie's chest w/out a camera flash:
black spots on dog's chest

Howie's chest w/ a camera flash:
black spots on dog's chest

Thank you,

Kraig Blamires


Online vet, Dr. Marie

Dr. Marie replied:

Hi Kraig...thanks for the great photos. Howie looks like a real sweetheart.

Acanthosis nigricans is usually much "uglier" than this. It can definitely affect daschunds, but usually it is in the armpits and causes the skin to be very thickened, almost like elephant skin. It is possible that this is the early formation of acanthosis nigricans, but my guess would be that it isn't.


Some dogs can get raised black dots called comedomes, but these don't sound like they're raised at all.

Sometimes I can see little black dots when an infection is starting...but again, this doesn't look likely from the pictures.

Most likely though, this is something called lentigo. Lentigo is kind of like "age spots" in people. They are nothing to worry about.

My general rule of thumb for things like these is that if they are not bothersome then I wouldn't be worried. If you start noticing that they are raised or itchy then I would have your vet look at them.

Keep in mind though, that I can't make a diagnosis over the internet. So, if you are concerned or if your "gut" is telling you that something is wrong then have your vet check Howie out!


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Disclaimer: Although Dr. Marie is a qualified veterinarian, the information found on this site is not meant to replace the advice of your own veterinarian. AskAVetQuestion.com and Dr. Marie do not accept any responsibility for any loss, damage, injury, death, or disease which may arise from reliance on information contained on this site. Do not use information found on this site for diagnosing or treating your pet. Anything you read here is for information only.

Customer reply:

Thank you for your quick reply. As it sits right now Howie doesn't seem to be bothered at all by them. If he starts acting out of the norm at all I will for sure bring him into the vet.

It just worried me, because they literally just appeared. I clipped his nails a week ago and don't remember anything being there.


Online vet, Dr. Marie

Dr. Marie replied:

You're very welcome! If anything changes, feel free to reply!

Dr. Marie.



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Dr. MarieDr. Marie is a veterinarian who practices in a busy animal hospital in Ottawa, Ontario. She created Ask A Vet Question as a resource for good, accurate veterinary advice online. Dr. Marie treats dogs, cats, hamsters, guinea pigs, and rats. She has been a vet since 1999.

Is an online vet visit just as good as a trip to your veterinarian? No! But, many times, asking an online veterinarian a question can help save you money. While Dr. Marie can't officially diagnose your pet or prescribe medications, she can often advise you on whether a vet visit is necessary. You can also ask Dr. Marie for a second opinion on your pet's condition.