I have a 3 yr old Labradoodle, who was kenneled most of his life, but I think he has a separation anxiety disorder...everytime I leave and put him in the kennel he breaks out after about 2 to 5 minutes. He doesnt try to break out when I am home just as soon as he knows I leave the house. I have tried music, tv, and nothing seems to help stop him from breaking out. This wouldnt be a problem except I work 8 hours a day about 5 times a week and he needs to be in a kennel so he doesnt mark or destroy anything. Any suggestions on how to get him to stay in the kennel