Animals know a lot more about numbers than you might think. Guppies can tell large numbers from small ones, hyenas can count, and chimpanzees can use Arabic numerals! Readers will get to know these extraordinary animals and more--and how scientists study their number sense. Each chapter wraps up with an interview with a researcher and a hands-on activity that give readers the chance to challenge their own math skills. Illustrations brimming with personality,...

"Introduces the reader to fast animals."--

Provides information on some of natures top hunters, from the massive polar bear to the small praying mantis.

Illustrations and text describe nine animals with hard or spiky skins or horns, including armadillos, crocodiles, goat antelopes, and porcupines.