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Updated on September 23rd, 2025
Pet's info: Dog | Mixed Breed Small (up to 22lb) | Female | spayed | 10 lbs
Dog has "fields" of strange spiny things that resemble blackheads on her belly and just above the armpit areas if her back legs. This is a very recent development. I've never seen anything like this before. They seem to cause her no discomfort. She is a 4 year old mutt/Chihuahua mix in otherwise good health.
2 Answers

Answered By Daniel Fonza, DVM
Veterinarian
Published on May 15th, 2018
Answered By Dr. Dayna, DVM, CVA
Veterinarian, Certified Veterinary Acupuncturist
Published on September 16th, 2017
Good questions. From the picture it looks like it may just be pigmentation changes. This can be caused by sun exposure, but also can be caused by chronic inflammation common with allergies. The bumps should be evaluated by a veterinarian to decide if they are concerning or not. Somtimes a needle aspirate done at the time of the appointment can give that information. I hope this helps!
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