Labradoodles, puggles, dorgis, cavoodles, cavapoos: Whatever you call them, there's no escaping the explosion of designer crossbreeds parading along our streets and through our dog parks these days.

Have you noticed how many varieties of doodle and poo dogs are around nowadays? These are all deliberate hybrid crosses between a poodle and another purebred dog. You can find labradoodles (poodle and ...