German Shepherd Dog Rescue

Mischievous kids locked the German Shepherd Dog in its kennel and challenges the watchman that if he can find the key to release the Dog. The dog has herding duty, he must be there to protect the flock of sheep.He is barking, but the watchman is so confused, he don't know where they kept the key.The watchman is helpless. Can anybody help him by solving the puzzle and unlock kennel doo