My lids are kept down so this has never happened but my Andy is attracted to water like a magnet. Whenever there is running water in any sink in the house he comes running. One day, after scrubbing the floor, I poured the dirty water from my bucket into the toilet. Andy jumped up on the toilet rim to watch the swirling water go down and, you guessed it, he slipped and fell in. He was one very unhappy little wet kitty and was gone like a streak of white lightning. Never had him come back in there to watch again!