Being a big girl, there are certain spots on Misty's body that she can't reach. So when she has an itch just above her tail (a flea's favorite spot), she barks at it. So she barks then looks at me, and I say, "Do you have a flea?" And I reach for the flea comb. She lays down and endures a combing, and sure enough, I usually will comb out a flea or two. She and I communicate quite well.