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Pugs and Persian cats show strikingly similar 'smushed' faces due to artificial selection
Through intensive breeding, humans have pushed breeds such as pug dogs and Persian cats to evolve with very similar skulls ...
Scientists warn some dogs and cats are being bred to evolve the same 'smushed' faces - and it could lead to breathing, eating and birthing issues
Flat-faced dogs and cats have been bred to such extremes that they now look more like each other than their own ancestors, ...