rule 34 2023 abs anthro anthro on anthro anthro penetrated anthro penetrating anthro penetrating anthro ass back muscles backsack balls big balls big butt big muscles big penis blush bodily fluids bruki character canid canine canis deltoids domestic duo ear grab erection eyebrows fur genitals german shepherd grey background hands behind back herding hi res humanoid genitalia humanoid penis irrumatio jewelry kneeling male malemale male penetrated male penetrating male penetrating male mammal motion lines muscular muscular anthro muscular male navel necklace nipple piercing nipple ring nipples nubruki artist nude oral oral penetration pastoral pecs penetration penile penis piercing ring piercing saggy balls saliva saliva on penis scar sex simple background sound effects sparkles standing text triceps tuft wolf 7597436