FURVERT!

animal_genitalia animal_penis animated animated_gif anthro balls barbatosxiii becoming_erect canid canine canine_genitalia canine_penis canis erection eyes_closed fur genitals hi_res holding_object holding_pillow knot knot_swelling knotted_penis line_art male mammal monochrome nude penis pillow sheath short_playtime sleeping smile solo tail throbbing throbbing_penis unsheathing wolf