2018 3_toes 4_fingers abstract_background anatomically_correct anatomically_correct_penis animal_genitalia animal_penis anthro arm_markings balls barefoot biped black_balls black_eyebrows black_fur black_hair black_nipples black_nose black_tail blue_markings blue_penis butt canine canine_penis digital_media_(artwork) dog ear_markings erection eyebrows facial_markings front_view fully_sheathed fur green_eyes hair knot leg_markings looking_at_viewer male mammal markings model_sheet nipples nude penis plantigrade pubes ring sheath signature smile solo standing sylvanedadeer toe_ring toes yellow_markings