Rule 34 Dev - 2020 abs anthro armpit_hair balls beard biceps black_body black_penis black_scales body_hair chest_hair claws dragon erection exposurebucks facial_hair fangs flexing genitals grin hair hi_res horn male male_only muscular muscular_anthro muscular_male nipples nude open_mouth pecs penis pinup pose pubes quads red_hair scales scalie smile solo standing teeth triceps vein veiny_penis|4644586032