``Once upon a ranch'' is how Lowell begins her enjoyable twist on the story of Little Red Riding Hood, starring a brave heroine who needs no lesson in self-reliance. First seen aiming a slingshot at a deadly snake, Little Red is instructed to take food to her sick grandmother. In the desert, she encounters the wolf, who is wearing a cowboy hat ``three shades blacker than a locomotive,'' and asks too many oily questions: ``What's your name, honey?'' and ``Where are you going, sugar? . . . Why not take a little ride with me?'' Little Red gives him the slip, only to rediscover him masquerading as her grandmother in the old woman's own bed. The wolf snatches her, but Grandma appears brandishing first an ax and then a shotgun to chase the villain off, complaining indignantly all the while: ``Breaking into my house! . . . Getting fleas in my bed!'' These two no-nonsense characters, with stick legs and huge cowboy boots, happily recap the victory while sitting on a fence munching sandwiches. There is humor in the pictures, with snakes among the cacti. The desert colors—mostly yellow, orange, and green—are painted in flat blocks of color in effective compositions that are deceptively simple while enhancing each scene's mood, whether pastoral or fearsome. A merry success, this Wild West fairy tale makes other versions look limp by comparison. (Picture book. 5-8)