My cat Lianna does that too, even if there is no food left. I always end up taking the plate away from her. She is the only one that does it. Although, Wylie takes his toys and puts them in his food dish. Haven't figured that out yet. Any ideas, other than the fact that he's a crazy kitty.

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"As we all know, cats now rule the world."
--John R.F. Breen