The problems with smooshy faces, droopy eyelids and unnatural sizes

THE PROBLEMS WITH SMOOSHY FACES, DROOPY EYELIDS AND UNNATURAL SIZES

Deliberately breeding dogs to create cute or interesting characteristics may also inadvertently create physical disabilities.  For example, bulldogs and other flat-faced breeds can suffer from life-long breathing problems because of their set-back noses and shortened air passages; bloodhounds can have chronic eye irritations and infections as a result of their droopy eyelids; and the wrinkly skin of the Chinese Shar-Pei makes the animals susceptible to chronic skin infections.

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