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What's this blood-filled cyst on my dog's leg? Is it serious?

Updated On September 23rd, 2025

Pet's info: Dog | Schipperke | Male | 15 lbs

My sister dog has a small blood filled cyst on the inside of his hind leg. It does not bother him even when you touch it.

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on January 20th, 2017

The problem with cysts is that they can get bigger, then pop, and refill again. This should be drained sterilely, and the cyst may need to be removed surgically to prevent it from reoccurring. Do not try to pop it yourself, as that will introduce infection into the area. I would have Jim seen by a vet today if the vet is open for normal business hours, or on Monday to have the cyst drained. The vet can decide if it needs to be removed surgically.

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