I've read the worst thing you can do is chase a dog that's gotten loose. The dog will think it's a game and will run. Since Boxers are so playful, your boy might feel you are playing a game with him, if you are in fact chasing him. I read that instead of chasing, one should sit on the ground and pretend to cry, loudly. Since Boxers are especially sensitive, your boy might run back to you. Now, if he takes off out the door like a rocket, clearly this would not work! Tae is really attached to me (probably not good), so if I did the sit down and cry thing, she would probably come back (not that I want to find out!). If she's ignoring me in the house, I have on occasion tried it and successfully reeled her in!