Book excerpt: Are 'pure - breed' mixes such as yorkipoos or labradoodles really designer dogs? Do so - called 'designer breeds' - hybrids or mixes - actually produce dogs that are hypoallergenic or less temperamental? And are they worth the exorbitant prices - often $2,000 or more for a designer puppy?! The Complete Idiot's Guide to Designer Dogs answers these and many other questions. Cutting through the hype and explaining exactly where to find and what to look for in these unique cross breeds, this book helps even the inexperienced pet owner understand the difference between a crossbreed and a mutt.