Youtube: Della the yellow Lab is the only dog that knows how to unlock gates and doors at the Happy Tails Resort. Jana Underwood the owner at first thought the staff left the gate open and kept scolding them to "CLOSE AND LOCK THE GATES!" After two or three more times Della was finally caught. She would also open the doors, pushing down the horizontal handles, throughout the large facility and find her way to the lobby. That's why the Happy Tails staffers call her "Houdini."