Breeding dogs for particular characteristics ... of dog breeds is a relatively recent phenomenon, beginning with selective breeding practices during the past 200 years. Today, various breeds ...

Selective breeding is when organisms are deliberately ... Five very different breeds of dog. Pedigree dogs come in lots of different varieties. They may be different colours and sizes, but they ...

Selective breeding is when organisms are deliberately ... Five very different breeds of dog. Pedigree dogs come in lots of different varieties. They may be different colours and sizes, but they ...

Over the last 100 years, dogs have changed dramatically, all thanks to selective breeding. Once valued mainly for their abilities and roles as working companions, today's dogs often show ...

From Pekingese to St. Bernard and greyhound, dogs come in such startling variety it's easy to forget they belong to the same species. The profusion of breeds today -- at least 150 -- reflects ...

Obesity is on the rise not just in humans but in dogs, whose history of selective breeding makes them an ideal species for studying the balance between genetics, diet, and lifestyle in weight gain.