FURVERT!

3:5 abs animal_genitalia animal_penis anthro balls biceps big_penis canid canine canine_genitalia canine_penis canis erection fur genitals grey_background hi_res knot knotted_penis koskasha looking_at_viewer low-angle_view male mammal muscular muscular_male navel nipples nude pecs penis pubes simple_background solo tail vein veiny_muscles veiny_penis white_body white_fur wolf