The book offers an unusual variant to the frequent descriptions of animal preparations for the winter, with special emphasis here on adaptations of animal coverings. A cross- section of types has been offered--a bird moulting, a grasshopper growing out of its exoskeleton, a snake shedding its worn-out skin. The three mammals include a woodchuck, which grows a warmer fur in the winter; a deer, which grows antlers specifically for fending off rivals during the mating season; and a weasel, which gets a different colored coat for protection during the winter. Despite the title of the book and the final chapter, which parallels the changes in animals with humans wearing different clothes in different seasons, the author has avoided the patronizing tendency to personalize animals. Although the text is simply written, it is quite explanatory about the physiological changes and why they occur.