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My old dog has a red lump on her neck. Why didn't antibiotics work?

Updated On September 23rd, 2025

Pet's info: Dog | Jack Russell Terrier | Female | spayed | 11 years and 8 months old | 25 lbs

My dog is an older dog and she has a big red lump on her neck the vet gave me antibiotics but it did not work

1 Answer

Most Helpful Answer

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Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on September 19th, 2018

Thanks for using Petco Pet Education Center, formerly Petcoach! This could be a benign or malignant growth. 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 Lucy evaluated by a veterinarian for further assessment and treatment. Good luck and have a good night!

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