Box turtles live around the world. Six subspecies of the box turtle are found in the United States. These popular pets have a unique feature-a hinge on their underside that allows them to seal up their shell so tightly that it cannot be pried open, even with a knife! Named for this box-like quality, the box turtle will work its way into kids' hearts as it burrows, mates, hatches, and hibernates in the pages of this book.