FURVERT!

animal_genitalia animal_penis anthro athletic athletic_anthro athletic_male balls biped black_body black_collar black_eyebrows black_fur black_leash black_nipples black_nose black_penis blush bound brown_balls brown_body brown_ears brown_eyes brown_fur brown_inner_ear collar digital_media_(artwork)duo equid equine equine_genitalia equine_penis erection eyebrows flared_penis fur genitals hands_behind_back hands_tied horse kneeling leash looking_up male male/male mammal mustelid ninetht nipples otter penis pink_penis shadow sheath sitting smile smirk tapering_penis vein veiny_penis white_body white_fur