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My senior dog has clear fluid-filled bumps on her back legs. What are they?

Updated On September 23rd, 2025

Pet's info: Dog | Miniature Pinscher | Female | spayed | 15 lbs

My female minpin is 17 years old and has clear fluid filled sacs on the undersides of her back legs

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on December 10th, 2016

It sounds like Lil Bit has some cysts on the underside of her back legs. Do not squeeze them or try to drain them yourself, as that will introduce infection into the area. I would take her into the vet first thing Monday to have them examined. The vet can sterilely drain them if they are cysts. Because cysts can reoccur, they may need to be removed surgically, but the vet can make that determination.

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