Flat-Faced Dogs Struggle to Breathe—Here's Why Scientists Are Worried

Dogs with super-squished faces like pugs and bulldogs have a hard time breathing because their noses and airways are too tiny and crinkled. Scientists discovered that many other flat-faced breeds, like Pekingese dogs, have the same problem, which can make them sick and unhappy. It's making people think twice about which dogs to get as pets!