I don't see how the well-bred pugs or even Bostons in the show rings can breathe well. Apparently Bostons with very smushed-in faces conform to the standard. I find it sad, but I've never met a show Boston or Pug so what do I know?Tbh I think responsible breeding can do great things, so I don't think ethically bred pugs half breathe. Maybe 1/4 breathe