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What to do if my pet is losing hair and has a large lump on its neck?

Updated On September 23rd, 2025

Pet's info: Dog | American Bulldog | Male | 40 lbs

Pet is losing hair and large lump on neck

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1 Answer

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Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on November 28th, 2018

Thanks for using Petco Pet Education Center, formerly Petcoach! This could be a benign or malignant growth. This could even be an abscess. There is no way of knowing for sure without an examination though this represents a reason to seek veterinary care. This is usually determined with an examination and a fine needle aspirate (FNA) or a biopsy. Treatment depends on the findings up to that point. I recommend you have King evaluated by a veterinarian for further assessment and treatment. Good luck and have a good night!

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