FURVERT!

4:3 absurd_res anatomically_correct anatomically_correct_anus anatomically_correct_genitalia anatomically_correct_penis animal_genitalia animal_penis anus balls black_sheath_slit butt butt_focus canid canine canine_genitalia canine_penis canis claws domestic_dog erection feet feral foot_fetish foot_focus genitals hi_res knot knot_in_sheath knotted_penis male mammal pawpads paws penis puffy_anus rexthenurse sheath sheath_slit solo teeth tongue tongue_out wolf