abs animal_genitalia animal_penis anthro balls balls_on_ground big_balls big_breasts big_penis black_nipples breasts building crouching duo equine_penis erection flared_penis frottage genitals gynomorph hand_on_leg hand_on_thigh hybrid_genitalia hybrid_penis intersex intersex/male knot knotted_equine_penis larger_gynomorph larger_intersex lying male muscular muscular_gynomorph muscular_intersex nipples nude_gynomorph nude_male on_back on_grass outdoors penile_spines penis penis_size_difference presenting presenting_penis sex sitting_on_another size_difference smaller_male spiked_penis spikes spikes_(anatomy) spots spread_legs spreading whiskers window sten_the_cheesemonger felid leopard mammal pantherine hi_res