Rule 34 Dev - animal_genitalia animal_penis balls big_penis bodily_fluids equine_penis felkin feral furgonomics furry-specific_piercing genital_fluids genital_piercing genitals half-erect hi_res lying male male_only on_back penile_spines penis piercing precum rubikon sheath sheath_piercing solo spread_legs spreading theotormon|4759309960