What are some strange things your pet does?

My old boxer used to climb up the fence and jump over to the neighbors house at night and squeeze his way out of their main gate (ours had a grille that was too small for him to squeeze out of). He then would run outside to scavenge through the rubbish from the neighbor's. We called him 'Houdini' because he was such a great escape artist! He never liked being in the house and would run around the neighborhood. He liked being outside and would often find ways to sneak out of the house!
He could even climb fences to jump over to the neighbors' houses!