Some of the greatest inventions that changed the modern world have been based on nature. In Porcupine Quills to Needles, readers will discover how the invention

"Long and sympathetic watching, radio tracking, chemical analysis are all part of this naturalist's ingenious and peaceable arsenal of inquiry into the lives of

A porcupine named Fluffy is happier with his name after he meets a similarly misnamed rhinoceros. OThe humor is just absurd enough to make the picture-book set

Describes the physical characteristics, behavior, and natural defenses of the porcupine.

Likes living in trees or on the ground? Herbivore or omnivore. Is it a porcupine or a hedgehog? Readers will learn how these adorable spiky mammals are alike an