My long haired chihuahua is now about 8 months old. She sleeps in her crate at night and is fine about that but sometimes when I put her into "her room" she will whine and bark for no discernible reason until we cover her up. Is this just "teenaged" behavior, like "I need a little privacy right now, please?" What do you think? Remember, most of the time, she is absolutely fine about going into the crate and gives us no trouble about it.