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My dog has a red, hard lump on his neck. Is it cancer? What to do?

Updated On September 23rd, 2025

Pet's info: Dog | Boston Terrier | Male | neutered | 28 lbs

Hello! Today while my mother was petting our dog she noticed a lump on the back of his neck. Unfortunately I have not taken a picture of it but the lump is red and hard when you squeeze it. He is also agitated when you touch it. We are wondering if this lump could be cancerous and what we should do from now on until we schedule a vet appointment.

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1 Answer

Most Helpful Answer

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on April 4th, 2019

Without an exam and diagnostics, it is almost impossible to determine if the kump is malignant. Schedule that appointment with your veterinarian. A fine needle aspirate can be done in the clinic to collect samples for pathology. This may provide a diagnosis. Afterwards, you can discuss treatment options with your vet. In the meantime, keep Otis from bothering the area. You can use an e-collar (cone) if necessary.

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