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My cat's flea bite mark turned dark. Is this a normal healing sign?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | unspayed

Can you please tell me what happened here? The black mark on my cat's skin was a flea bite before. Why has it darkened? Thanks!

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1 Answer

Most Helpful Answer

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Answered By Amber W

Veterinarian, Certified Veterinary Acupuncturist

Published on September 5th, 2017

Hello and thanks for using Petco Pet Education Center, formerly Petcoach! When there has been inflammation in the skin (like what happens secondary to a flea bite) the skin will sometimes change color as it heals. That area looks like it is starting to regrow hair and that the original inflammation is subsiding so I wouldn't be concerned. It is recommended to use at least 4 months of consistent flea prevention to fully eradicate fleas or all year round if Lynx is an outdoor cat. A high quality flea preventative like Frontline plus, Revolution or Advantage should be used.

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