For some reason a few weeks ago my cat has taken a liking to drinking water or w/e else may be in the cup. If there is a cup of water sitting on the table or wherever else she will get up on the table and stick her head into the cup and start drinking. If the cup is not filled enough she will knock it over. She acts as if its canned cat food. Thing is I always give her cold, fresh water everyday. Maybe its the ice in the cups?