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Why does my dog's butt leak metallic-smelling liquid? How to stop?

Updated On September 23rd, 2025

Pet's info: Dog | Shiba Inu | Male | neutered | 1 year and 7 months old | 23 lbs

I got a dog a few months ago a Shiba Inu. He is a year and 7 months old. Occasionally, his butt leaks a liquid. It smells almost like copper or metal. I am just wondering how to stop this or what it is as I do not want this smell all over my couch and floor. He licks his butt sometimes when it happens so his breathe can smell like it too. What is this? How do I prevent it?

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1 Answer

Most Helpful Answer

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Answered By Ana M, DVM

Veterinarian

Published on May 24th, 2018

Thank you for submitting your question regarding River. I suspect he is expressing or leaking fluid from his anal glands. These are two sacs that sit under the skin on either side of the anus. They express fluid each time the dog defecates to mark its scent. Occasionally the glands will become too full and leak or the animal will accidentally express them when startled. I would start by having them expressed at a veterinary hospital. Groomers do not tend to do a thorough job. They will let you know if the contents appears normal or not and make a recommendation on how frequently to have it done. Some dogs will need them expressed regularly. I hope this information helps!

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