rule 34 2016 abstract background absurd res anthro anus ball tuft balls biceps bigmaster black balls black fur black nipples blush bodily fluids body hair breath brown fur canid canine canis chest hair claws domestic erection eyebrow piercing facial piercing foreskin fur hand behind head hand on stomach happy trail haps hi res humanoid penis lip piercing lying male male only mammal mastiff molosser multicolored fur musclegut muscular muscular male nevarrio nipples nude on back open mouth partially retracted foreskin pecs penis piercing pink penis pinup pose rottweiler signature solo sweat teeth two tone fur uncut yellow eyes 3282469