ITHACA, N.Y. – Through intensive breeding, humans have pushed breeds such as pug dogs and Persian cats to evolve with very similar skulls and “smushed” faces, so they’re more similar to each other ...

Domestication has made cats and dogs more diverse, but also curiously alike – with serious implications for their health and welfare, new research shows. At first glance, Persian cats and pugs don’t ...

Artificial selection has led to the skulls of pugs and Persian cats evolving to be more similar to each other than to the rest of their own species. You may have heard that couples who stay together ...