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My dog has multiple lumps, one large and rapidly growing. What is it?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Male | unneutered | 12 years old | 110 lbs

My dog has just recently developed about 10-15 lumps on him including a very large one right between his shoulder blades that has grown rapidly. They don't seem to bother him or hurt him. What do you think is wrong with him?

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on April 15th, 2019

This could be hives, but it could be something else such as a cyst, lipoma, benign tumor, or malignant tumor. I'm most concerned about the large one that has grown rapidly. Any suspicious lumps should be examined by the vet. The vet can perform a test called a fine needle aspirate on it. To do this, the vet sticks a small needle into the lump to get a sample of its cells, and examines the cells on a slide under a microscope. It's usually painless to the animal, and relatively quick to perform. Once the cause of the lump is diagnosed, the vet can discuss treatment options if needed. Please take Kahne into a vet in the morning. Best of luck.

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