FURVERT!

1:1 2011 aaron_(artist)anal anal_knotting anal_masturbation anal_penetration anthro anus backsack balls biceps big_muscles big_penis black_body black_fur blush bodily_fluids border canid canine canis crouching cum cum_on_ground cum_on_wall cum_while_penetrated cumshot cutaway digital_media_(artwork)dildo dildo_in_ass dildo_insertion dildo_sitting doco ear_piercing ejaculation english_text erection feet fur genital_fluids genitals hands-free hi_res hindpaw imminent_knotting knot knotted_dildo knotted_penis knotting large_penetration looking_back male mammal masturbation muscular muscular_anthro muscular_male nude object_in_ass orgasm paws penetration penis piercing pounding_ass raised_tail sex_toy sex_toy_in_ass sex_toy_insertion solo spread_legs spreading stretched_anus tail text thrusting tight_fit toying_self vein white_border wolf yellow_eyes