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Removed a dog tick, saw yellow stuff. What is it and what next?

Updated On September 23rd, 2025

Pet's info: Dog | Border Collie | Female | spayed | 4 years and 1 month old | 44 lbs

I live in Washington state and my dog had a tick who had ballooned to huge before I found it. When I removed it and killed it, yellow pus and no blood came out of it. Is this just my dogs WBCs? She seems fine, so signs/symptoms of anything. Can I just monitor at this point since chance of lyme is so low here? Thank you!

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1 Answer

Most Helpful Answer

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Answered By Juliana, DVM

Veterinarian

Published on April 22nd, 2018

Great job finding and removing the tick. The yellow material you saw as you squished the tick is likely some of the ticks internal structure/anatomy as well as the digested meal. I would just clean the site on Kona where you removed the tick with warm water and soap and monitor at this point like you said. There may be a small bump or scab or a little redness at the site where the tick attached, and this should resolve in the next 10-14 days. Lyme disease as well as other tick borne disease can cause lethargy, fevers, and joint pain. There are several tick preventative medications you can consider to prevent future ticks. Examples are Nexgard and Simparica (which are monthly oral medications) and collars such as the Preventic collar or Seresto collar.

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