How to tell a bison from a buffalo-not to mention a yam from a sweet potato Here's a book for anyone who's ever wondered about the difference between a crayfish and a crawfish. Or a frog and a toad. Or a buzzard and a vulture. Animal taxonomy is not what you'd call an exact science, and the field is lousy with all sorts of confounding terms. In this entertaining, highly useful reference, Philip Mortenson takes on a wide-ranging list of monikers, from plants to higher mammals. Reviewed by an impressive cadre of experts, the book lays to rest any lingering confusion over the distinctions between seemingly related-yet crucially distinct-terms, such as mushroom and toadstool; moss and lichen; crocodile and alligator; skate and ray; turtle and tortoise; and mink, sable, ferret, ermine, stoat, and weasel. Everyone from the language lover to the nature buff will be charmed by this book. Philip B. Mortenson (Minneapolis, MN) studied the philosophy of science at the University of Minnesota.