hes probably got seperation anxiety. Common behaviors occurring from separation anxiety include chewing, digging and scratching at windows or doors; urination and defecation resulting from stress; and barking, crying and howling. It's important to remember that your dog's separation anxiety behavior is part of a panic response, one that he can't help. For that reason, punishment simply will not work. One exercise that can help with separation anxiety and is fairly easy to execute is to practice sit-stay and down-stay commands using positive reinforcement. This gradually teaches your dog that he can remain calmly in one place while you're elsewhere. You want to say the command, then move briefly out of your dog's sight, gradually increasing the distance and time that you are away from your dog. On your return, use positive reinforcement by gently praising him or giving him a treat. If you're dealing with a fairly minor case of separation anxiety, there are several other things that you can do. First, try leaving your dog with an article of your clothing that has your scent on it. Also, keep all of your departures and arrivals low-key. ignore your pet for the first few minutes when you arrive home, then calmly pet him. also dont make a big deal when you are going out because this will make the seperation anxiety worse for you dog. For more severe cases of separation anxiety, you can do all of the above techniques combined with a process of desensitization meant to get your dog used to being alone. This process should begin with your normal departure activities, things that your dog recognizes like getting the keys, putting on your shoes, or grabbing your coat. Do these normal activities, but then sit back down. Repeat this exercise until your dog does not respond to your actions with distress. You then want to gradually increase what it is that you're doing. The next step is to do your normal departure activities but then go to the door, open it, then sit back down. After that, increase what you're doing so that you actually step outside, leaving the door open, then return and sit back down. Finally, increase it so that you step outside, close the door, then immediately return and sit back down. Slowly increase the amount of time that you're outside so that you get your dog accustomed to being alone and being calm. You should not go forward a step until you dog shows no signs of distress with what you are doing. If your actions do produce anxiety, you've likely gone too fast and need to return to the earlier step. Your goal should be to get your dog to handle short absences between thirty and ninety minutes in length. Once that has been accomplished, you can start to try some longer absences. Punishment should never be used and crating is not recommended. Getting another pet as a companion usually doesn't work either. What can work, however, is lots of patience and understanding.