An animal that sleeps 20 hours a day should be able to make its sleep time coincide with its owner's. There's no need to get up at 5 AM and run around.
How come when you put an ice cube into a glass of water, one-tenth of the cube doesn't sit above the waterline? Instead, the cube floats right at the surface of the water. Same thing with chunks of ice in a lake or a river: they never stick out above the water. Guess icebergs can only form in salt water.
But what happened to the ships with the treasures?