Rule 34 Dev - 1boy animal_genitalia anthro beard belly biceps brown_fur brown_hair bullmastiff_(character) canine claws clothed clothing facial_hair front_view fur green_eyes hair hand_on_thigh hi_res humanoid_penis looking_at_viewer male male_only mammal manly mature_male mirera muscular muscular_male nipples pants paws pecs penis pink_nose pose pubes sideburns simple_background solo standing tan_fur teeth topless vein veiny_penis|2334088000