abs anthro anus balls bara barazoku belly big_penis butt erection gaping gaping_anus genitals green_body hands_on_legs lying lying_down male muscular muscular_anthro muscular_male nipples on_back penis presenting presenting_hindquarters seductive sharp_teeth solo spread_legs spreading tan_belly teeth vein veiny_penis rulethony34tano_(director) crocodile crocodilian crocodylid reptile scalie tail