Patricia McMillan has long awaited the perfect opportunity to publish a dachshund storybook. Throughout her first grade teaching and feelance writing careers,she has been surrounded and encouraged by her own short-little, long-little dogs, also called doxies. Their daily walks often invite comments and laughter. "Hot dogs!" "Wiener dogs!" "Sausage dogs!" But, head held high, they trot along watching the world around them, seemingly oblivious to the remarks. Their owner marvels at their self-esteem. "Wouldn't it be great," writes Patricia McMillan , "if kids today could have that doxie coat of armor against name-calling?" Perhaps Shorty Longfellow, a low-slung dog with high self-esteem, will provide a good role-model.