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Found lumps on my dog's back. Are they fleas/ticks? What should I do?

Updated On September 23rd, 2025

Hi my dog is a 10 year old caviller King Charles spaniel. Today I found has 3 lumps on her back. They are tiny and like on the surface of the skin but one of them (the first photo) appears to be bigger under the skin which I can feel through her skin but not see. I am planning to take her to the vets on Wednesday if need be as that is when I get paid but I was wondering if it was ticks/ fleas/ lice etc. incase I can buy a treatment over the counter and start treating it before Wednesday.

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1 Answer

Most Helpful Answer

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Answered By Jenna Beyer, DVM, MBA, cVMA

Veterinarian, Certified Veterinary Acupuncturist

Published on April 11th, 2020

I can't really tell from the picture what it is. If you dog isn't on a flea or tick preventative, that could be part of the issue. Skin infection, sebaceous cyst, or other masses would be possible, as well. I would wait and see what happens. You can get her started on a flea preventative, and use a medicated shampoo like Dechra MalAcetic Ultra Shampoo for mild skin infections.

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