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What is this black lump growing on my senior dog's back?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Male | neutered | 9 years and 5 months old

I have found a black lump on my dogs back, it feels and looks like a black olive, it is about 1 inch wide under skin and half an inch above the skin, it has been getting.bigger very slowly, can you advise please, my dog.os.10 years old and is a German shepherd and lab cross. Thanks.Lorraine

1 Answer

Most Helpful Answer

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Answered By Sara Farmer, DVM

Veterinarian

Published on March 25th, 2019

It sounds like this is some kind of skin growth. Dogs can develop melanomas of the skin along with many other benign growths. I would recommend having your vet take a look - they might recommend taking a sample with a small needle to determine what this might be, or they might recommend going ahead and removing it.

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