This is from my cat.
Some more info about my cat, around 5-6 years old. She was a stray before I took her in - 99% of time spends inside. Is spayed. Haven't noticed overgrooming.
Thanks.
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Update: Went to the vet he said it's fleas. Thought it was just dead skin or whatever. Puss wasn't too happy to get in the carrier, that's for sure. Put some medicine on her fur hopefully it will sort it out.