Animorphs (Animorphs #1-54)

Animorphs "RM" is an exciting series for young adult readers about five teens who are given the power to "morph" into any animal they touch and then to absorb its DNA. This power is granted them by a dying Andalite alien named Elfangor, who also warns the teens that Earth is being threatened secretly by a group of aliens called Yeerks. This high-interest series is currently a successful television show and will be sure to intrigue even the most reluctant readers.