Two of my cat kids even scratch the floor gently in front of their water bowl before they will take a drink. Chester (the youngest) picked the habit up from Luke. Luke picked the habit up from his older sister, Lucy Jane (Rainbow Bridge now). Where Lucy got the habit is anyone's guess. It's just something she always did and the habit got passed down. My other two, Leroy and Leonardo don't do it at all. It's so funny to see Chester, who never met Lucy, carry on her habits. Just shows you what little characters they are!