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4_toes anthro book bottomless breasts canid canine canis catwolf claws cleavage clothed clothing collie cunnilingus digitigrade domestic_dog duo feet female female/female furgonomics genitals herding_dog hi_res hindpaw kneeling library mammal oral pastoral_dog pawpads paws sex sheepdog sitting soles spread_legs spreading tail tail_clothing toes vaginal vulva