FURVERT!

anus backsack balls bdsm black_body black_fur bondage bound canid canine canis claws countershade_face countershade_torso countershading ebon_lupus feral fur genitals grey_body grey_fur hi_res inner_ear_fluff looking_at_viewer male mammal northwestern_wolf pawpads rope solo submissive submissive_male suspension tail tuft upside_down wolf yellow_eyes