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My dog has a painless fluid sac after a healed bite wound. What is it?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Male | unneutered | 52 lbs

I have a retriever who recently was attacked by 3 dogs who broke into our backyard. He went into emergency and all of his wounds are healed but where there was a but now there is what looks and feels like a fluid sac near where one of the bites was before. It doesn't seem to be causing him pain and he lets me touch it but I would like to know what it could be and if it is dangerous.

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1 Answer

Most Helpful Answer

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Answered By Andrea M. Brodie, DVM

Veterinarian

Published on October 9th, 2018

This may be a seroma or an abscess. You can also try to gently push it. If it disappeas into the abdomen, then it would be a hernia, possibly caused by one of the bite wounds (internally, the skin would not have had a puncture for that to happen). I suggest you take Buddy to your veterinarian for an exam. If it is a seroma (the bump would not be hot and also not painful) then treatment would be benign neglect, the body will reabsorb the fluid over time. If it is an abscess (red, hot, painful) , it would need to be lanced by your vet. A hernia will need to be surgically closed. Please make an appointment with your veterinarian for a recheck.

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