My cat Jesse is completely in charge of when I can draw him. He can tell I'm drawing him even when he's sound asleep. If I am behind him while he's sleeping and I very stealthily begin to sketch, he waits until I'm committed to the drawing, and then he slowly rotates to a completely different position. The other day, though, I hung in there and sketched gesture drawings until finally he must have decided it was okay for me to draw him. When I was finished, he stretched, got up, and went outside.