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What are these hard, yellowish crusty scabs on my cat's skin?

Updated on September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | spayed | 9 lbs

My black cat, we don't know what breed she is exactly, has had a yellowish hard, crusty thing sticking out of the skin of her armpit for about 3-6 months now. She seems to have a second one around her leg too. We have no idea what it is but she it doesn't seem to really bother her. She's an older cat, about 8 years old, and I would I would feel a lot better if I knew what it was. She's also an indoor cat and we have 3 other cats who don't have these scabs. They all get along pretty well though.

1 Answer

Most Helpful Answer

Mariya Gugel, DVM

Answered By Mariya Gugel, DVM

Veterinarian

Published on January 5th, 2018

Thank you for using Petco Pet Education Center, formerly Petcoach! The scab can be a mass, matted fur, infection, or chronic wound. It is difficult to say exactly what it may be without a photo. If Twilight allows, you can use an electric clipper to remove the fur around the area to keep it clean and get a better look. If you think that the area is increasing in size, starts bleeding, or is causing discomfort, I recommend having Twilight seen by a vet. I hope this helps and that all is well!
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