See what scientists believe about humans' artificial selection pressures on the dog ... In fact, the evolution of the majority of dog breeds is a relatively recent phenomenon, beginning with ...

The profusion of breeds today -- at least 150 -- reflects ... can determine evolutionary relationships and chronologies. The dog, Canis familiaris, is a direct descendent of the gray wolf, Canis ...

In 1873, only 40 dog breeds and varieties were known; now, there are about 450 recognized breeds worldwide. Humans ...

Selective breeding, also known as artificial selection ... Poodles are one of the most beautiful and popular breeds today, widely seen in dog shows and as household pets. The breed had been ...