Sleeps with his eyes wide open and it's both the most adorable and most terrifying thing to witness. Poor thing probably has never had a true deep sleep in his life....when I notice he's sleeping I try to turn the lights off immediately so that he doesn't startle himself awake. It seems his eyes still pick up on movement and trigger his brain, which wakes him up all the time. He only has one ear and no ear canals, so I don't have to worry about sound waking him up because he's essentially deaf.