Talk about a dog marking its territory-by day Arthur Dog is a mild-mannered hound who guards the Dogopolis art museum, but when the moon is full, he becomes Art Dog. Donning beret and mask, he takes paints and brushes and fills the back alleys of the city with his murals. Art Dog remains undiscovered until he’s framed for the theft of Leonardo Dog Vinci’s Mona Woofa. He’s thrown in the clink, but escapes with the help of his superpowered medium (\