Designer “cross-breed” dogs, such as cockapoos, are often claimed to be healthier and better behaved than the pedigree breeds that are their parents. But two of the most popular cross-breeds, ...

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.