markus that’s hilarious. i’ll bet that took some figuring to discover! lol. make sure you do not leave your tool box unattended with maryann loose. she’ll drag out a set of pliers & tuck it away in a tube to use the next time you don’t give her enough treats! what a cheeky gal she is. lol.
your story reminds me of my friend’s standard poodle who would always houdini out of his pen. he got so good at it dispite the 4 pad locks they put on the door, that by the time my friend would lock the garage door & walk around her car to get in, she could here he was already out. turns out, the pen had a door on each end & the dog could lift the back latch up with his nose, and simultaneously wedge a part of himself inbetween the door & the pen. since this back door was only inches from a wall he’d have to wiggle enough that the whole pen shifted away from the wall until there was enough room for him to squeeze out! lol.
i guess since they don’t have to buy groceries, pay bills or fix dinner they have a little extra time on their ‘paws’ to figure escape routes out. 