Discovered it...unlocked! Took nothing, left raffle tickets for June 9th's World Wide Flash Mob Event. I'm not certain why this is called "The Dog Box." It's near spotless clean on the inside with nary a dog hair, no stray pieces of straw, no mushing paraphernalia, and no chewed upholstery. LBK's dogs would happily perform a makeover to make it a proper Dog Box!