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My dog has a brown slug-like thing on her thigh. Could it be a leech?

Updated on September 23rd, 2025

Pet's info: Dog | Cavalier King Charles Spaniel | Female | spayed | 8 months old | 12 lbs

Hi there We’ve just found a brown slug-like animal or possibly mucus on our dogs inner thigh crease (above her genitals). It has a vein type structure within it and we suspect it may be a leech (Eastern coast of NSW, Australia). It had white dried mucus surrounding it. Have you seen this before? She is 9 months old and was desexed at 6 months with no complications. Thanks in advance Emily

1 Answer

Most Helpful Answer

Jenna Beyer, DVM, MBA, cVMA

Answered By Jenna Beyer, DVM, MBA, cVMA

Veterinarian, Certified Veterinary Acupuncturist

Published on September 13th, 2019

I haven't seen that before. It could possibly be a leech. I am not familiar with these in your part of the world, so it may be worth a call to a local vet to see if there is anything that needs to be done other than a thorough bathing in the groin area.
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