Escape artist

Oh, Bailey! I can't believe you did it again, and to Marta this time!

For those of you who haven't met him yet, Bailey is the wacky dachshund who lives with my parents. Right now he is with his (really our) mom in Philadelphia while she is spending time with Neal. Although Bailey might make some patients smile, he isn't allowed at the hospital. And leaving him home alone with Coco (the cat!) doesn't work too well either, so he has somewhat happily been attending doggie day care, hosted by Marta. Today she had to go out for a while, leaving Bailey and a few other dogs on their own but behind gates in several rooms. When Marta returned, Bailey greeted her at the door. He doesn't seem to understand that he is supposed to stay behind the gate and somehow always manages to issue an "open sesame" command.

What do you mean I'm supposed to wait behind the gate? I thought that gates were put there to be moved.