I'm guessing that Stump sleeps a good 18 hours a day. I figure he's 13 so he can sleep as long as he wants to!! He loves the afternoon sun (and the morning sun, come to think of it), and he finds a warm spot and dozes off! Emmett is 3 and sleeps less than Stump does; his favorite nap time is afternoon. But he's pretty active in the evening and at night...and first thing in the morning...