Even though ferrets are relatively new to the pet world, these charming weasels have been human companions for thousands of years, as author Karen Dale Dustman shares in the opening of Ferrets. The first chapter of the book ("A Nod to Ferret History") paints a fascinating portrait of ferrets' place in human and natural history (who knew they were related to minks?). Since ferrets aren't legal in all states (or cities and counties, depending on local...