Hi, My dog has been acting scared for around a month, almost every night. It starts around 9pm and it lasts a few hours. She runs off her bed and hides in the shower or under the table. Sometimes she hides and others she seems to be very scared and alert, panting, ears and hair up. THeres no planes, no computer noises or any other noises that we have been able to identify when it happens. We moved to this new house about 2 months ago. THis never happened in the old house. Any ideas? I hate seeing her distressed. Thank you.