Discusses elephanthant's ears, trunk and teeth, what they eat, their ancestors, the different kinds of elephants, and why they are on the endangered animals list.

Discusses the great apes, their life cycle, habitats, young, and why these animals are endangered.

Discusses the marine turtles, their life cycles, diets, young, habitats, and reasons why they are endangered animals.

Discusses the different types of rhino, their life cycle, diet, young, habitat, and reasons why they are endangered animals.

“Each plotline has something in it to challenge readers . . . Cliffhangers and elephants will keep readers engaged”—from the award-winning author (Kirkus Reviews). We Bought a Zoo meets Jurassic Park in a gripping story featuring the evergreen appeal of human-animal friendships and set in an elephant sanctuary, about a thirteen-year-old girl, a cast of elephants, and a surprising new arrival—a woolly mammoth. Sam was born and raised in an elephant sanctuary. When a beloved elephant dies giving birth, Sam develops a connection with baby Woolly—who isn’t actually an elephant but was cloned from woolly mammoth DNA. And the billionaire genius behind the cloning experiment will stop at nothing to protect his investment. Smart, determined, and loving, Sam stands up to this powerful adversary to protect the sanctuary and her herd. In the best tradition of child-animal friendship stories, Elephant Secret explores the strong and complex bond between Sam and her elephants while offering a fascinating, authentic glimpse into elephant—and human—behavior. “Walters’ depiction of the bond that exists between Sam and her elephants is captivating. The elephants, who are presented as majestic and intelligent creatures with humanlike characteristics and rich emotional lives, will leave readers awestruck.” —School Library Journal “Walters interweaves his beautiful family story with a thorough description of elephant behavior—their intellect, compassion, and loyalty—and factual scientific possibilities of cloning an extinct species . . . A must-read for anyone with an interest in elephants and their welfare.” —Booklist “Walters packs in numerous details about these magnificent and highly intelligent creatures while raising complex ethical questions regarding humans’ relationship with animals.” —Publishers Weekly

The author, a computer science professor diagnosed with terminal cancer, explores his life, the lessons that he has learned, how he has worked to achieve his childhood dreams, and the effect of his diagnosis on him and his family.