at night she (3 month shihtzu) is in our bedroom in her crate with a sheet covering her entire crate. It's helped her calm down at night but she does wake up during the night and is a bundle of energy. During the day we keep the crate covered in the living room but do not cover the front, turn the lights off and put the classical music on. My coworker said that we shouldn't leave the sheet on during the day and the lights off...no wonder she sleeps all day and is full of energy all night. Her being left alone daily when we go to work has gotten better...no crying no barking. I spoke to my trainer and she said...well everyone has an opinion and don't change something if it's working. The sheet creates a den for her she said. I also think with no sheet, she could see through the side and up obviously so she used to get anxious to try to get out. Maybe that was intially..we've only had her for a bit over a week but she is settling down. Just need to figure out the night time stuff with her. My trainer said she should be able to sleep through the night. As much as we tire her out in the evening and we really do, she is still a super cute bundle of energy about 1 hour after we put all of us to bed. Just looking for feedback. thanks!