Possible, but I'm still betting on ear mites. Velvet had the same thing when we got her as a kitten. If you still have the black clumps put them on a piece of black paper. The mites are a bright red and show up against the black. A little trick I learned from my vet.doogie said:OK... I have one other thing to add... I just cleaned out the ear with a wet q tip... its wasn't hard, she was very good about it... what came out was little "clumps" of what appears to be dirt... is it possible its just a dirty ear? She is an inside cat ONLY.