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Why is my dog licking a sensitive, pea-sized lump on her ankle?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Female | 1 year old | 35 lbs

My dog has a small pea shaped and sized lump on her back “ankle” joint. On closer inspection it doesn’t appear to be oozing or bleeding nor have a “head” on it. It is whiteish red and the top layer is dry, but not scaby. She’s been licking it a little bit. She doesn’t like it to be touched. Any ideas what we’re dealing with?

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1 Answer

Most Helpful Answer

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Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on March 30th, 2018

Thanks for using Petco Pet Education Center, formerly Petcoach! This could be a benign or malignant growth. This is often differentiated by a test called a fine needle aspirate (FNA) which is a pain free, inexpensive and easy procedure which in most cases will help reach a diagnosis. Sometimes a biopsy is needed for a definitive diagnosis. I recommend that you have her evaluated by your veterinarian for further assessment and treatment. I am really hoping for something benign. Good luck and have a good day!

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