Themes: animals, nature, survival of the fittest, predators, nonfiction, tween. There are over 1,500 animals that eat their own kind. They come in all sizes and shapes. From the praying mantis to the polar bear. Cannibal animals eat to survive, possibly because of global warming. To keep their population in check. To get a healthy snack. To show another animal who's boss. And to ensure the perfect mate. Red Rhino Books Nonfiction is the first Hi-Lo children's nonfiction series at a first-grade reading level for students in grades 4–7. Visually appealing fullcolor photographs and illustrations—along with fun fact boxes—keep these books flowing. Also includes prereading comprehension questions along with a 20-word glossary for further reading support.