I have a 14 month old Jack Russell in the last few months she will not go to bed without sitting at the backdoor and bark for two hours. I have tried everything including squirting her with water and using an ultrasonic stop dog from barking. There is nothing different we do with her at night than during the day. Also she has started waking up around 430am and sits at the back door. I try and play with her as much as possible during the day but nothing seems to work. Please help I need sleep