rule 34 2011 all fours anal anal sex anthro anthro on anthro ass balls black fur black nose blue fur blush butt grab canine chester chesterc closed eyes duo erection foreskin fox from behind position fur fur markings furry furry only gloves marking grey background hand on butt head tuft humanoid penis husky kneeling log artist looking at viewer male male penetrating mammal markings multicolored fur navel nude one eye closed open mouth orange fur penetration penis raised tail red eyes sex signature simple background two tone fur uncut white fur yaoi 2833407