FURVERT!

1:1 2015 animal_genitalia animal_penis anthro anus backsack balls biped butt butt_shot canid canine canine_genitalia canine_penis canis close-up erection fluffy fluffy_tail fur furryratchet genitals grey_body grey_fur hi_res lying male mammal nude on_front penis perineum pink_background presenting presenting_hindquarters raised_tail signature simple_background solo spread_legs spreading tail white_body white_fur wolf