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Why is my dog's penis lump getting bigger after vet said it's fine?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Male | 10 years and 11 months old | 100 lbs

Our Labrador have like a sack growing at his penis. Vet says nothing to worry about but it is getting bigger. Please help

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on January 10th, 2017

It could be that Benjamin has a cyst in that area, which is why the vet says it's nothing to worry about. Cysts form when a sebaceous gland in the skin is blocked and there is a build up of oil. They are benign, but if it's getting bigger, then it needs to be drained sterilely. You can take Benjamin back into your vet to have it seen again since it's getting bigger, or you can take him into another vet for a second opinion.

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