I noticed a few weeks ago the birdbath "dish" (made of concrete that sits on a concrete pedestal) at my Mom's was flipped over and lying on the ground next to the pedestal. I went out to set it back up and smelled something and when I flipped the thing back over, her neighbor's cat was mashed flat underneath it, spread-eagle and dead for a couple of weeks. I can only surmise it stalked a bird and attacked, landing on the edge and flipping it over and getting pinned underneath. Karma.PeeBee was chillin' on the patio for a while and then went to have some bird soup in the birdbath.