abs animal_genitalia animal_penis anthro balls big_balls big_penis bodily_fluids canine_genitalia canine_penis close-up crotch_focus crotch_shot dripping erection genital_fluids genitals heavy_balls huge_balls knot leaking_precum male muscular muscular_male nude_male penis penis_tip precum precum_drip precum_on_penis presenting presenting_balls presenting_penis saggy_balls sheath sitting solo spread_legs spreading thick_penis vein veiny_knot veiny_penis anotheranon canid canine canis mammal wolf absurd_res hi_res