Rule 34 Dev - anthro anus backsack balls big_balls big_butt biped blonde_hair blush body_blush butt butt_blush genitals hair huge_balls male nude presenting presenting_hindquarters solo spread_butt spreading tail freckles_(artist) matthewbrandon canid canine canis domestic_dog mammal 1:1 2012 digital_media_(artwork) hi_res|1218330050