FURVERT!

alpha_channel animal_genitalia animal_penis anus backsack balls blue_eyes butt canid canine canine_genitalia canine_penis canis erection feral fur genitals grey_body grey_fur knot looking_at_viewer male mammal paper-wings pawpads paws penis presenting presenting_hindquarters raised_tail simple_background solo stomak_(artist)tail tongue transparent_background wolf