You know those fuzzy tank toppers that go on toilet tanks? I had a cat who would grab a mouthful of fuzzy, yank it out, and spit it on the floor. She didn't eat it, but I had a tank topper with a bald spot, and a pile of fuzzy on the floor. Then one day, I got sick of her doing it and took it off and tossed it. She never bothered anything else.