Everything you need to understand or teach Wilding by Jane Yolen.
The events in "Wilding" (collected in Twelve Impossible Things before Breakfast) take place in a future era, a time when wolves and tigers are extinct, when green skin is fashionable, and when the science of genetics has developed a process by which people can be changed into animals for a couple of hours. Changing into animals is called "wilding" and has been legalized in New York City, so long as it is done...