Was taking out the trash and just like bikerchic's dog, he gets excited when he see's me and he started to jump against the door and manged to lock the deadbolt. I was so mad! but impressed at the same time haha I kept saying "come on dog, you did it once, now just do it the other way" but no, i had to find a unlocked window (which is rare in my house) and claim back in.