abs animal_genitalia animal_penis anthro armpit_hair biceps big_penis black_nipples black_penis body_hair dark_hair equine_genitalia equine_penis erection genitals hybrid_genitalia hybrid_penis knot knotted_equine_penis large_balls male male_focus muscular muscular_male nipples penis pose solo vein veiny_penis avaru ambiguous_species humanoid hi_res tagme