Zoonauts: The Secret of Animalville

"A young girl's tribulations at home and school are at the center of this fantastical tale. At first glance, Jen's troubles are typical of any eighth grader: teacher trouble, a know-it-all younger brother, and a gloomy conviction that her family is nothing like those of her friends. But her secret is deeper than anyone can imagine. Jen and her brother Cody are being raised by a group of super-intelligent animals who watch over them and teach them things no other humans know. When Jen's English teacher refuses to accept her unusual family story as the truth, Jen confides in her best friend Sara about the crisis brewing at Animalville. The inhabitants of earth are threatened by an alien invasion, and only cooperation among all the sentient creatures on the planet can prevent it. Themes of animal rights, ecology, and space exploration are woven into this suspenseful story of Jen's race against time to save the world from disaster."