Stenotic nares
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Stenotic nares is part of the brachycephalic syndrome of short-nosed dogs. Breeds such as Boxers, English Bulldogs, Pugs, Boston Terriers, Shih Tzus, Lasa Aphsas, etc. are all considered brachycephalic breeds. Stenotic nares means the nostrils are pinched or narrow. This makes it more difficult to breathe and causes snorting and snoring in these animals. It is a congenital trait; these animals are born with it. Veterinarians perform a simple surgery to help widen the nares, often at the same time as a spay or neuter.
