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Longhaired dogs do not suffer from heat in the summer any more than do shorthaired dogs. In truth, the longhaired dogs suffer less from heat than do the shorthaired dogs.
There is a belief that longhaired dogs such as the Chow Chow, the Russian Wolfhound (now called the Borzoi) and the Samoyed cannot thrive in the southern part of America, where the summer heat is great. This belief does not accord with facts, for within the past five years all of the foregoing dog breeds, and also the St. Bernard, the Collie and the German Shepherd Dog, all long-coated dog breeds, have become common in the southland.
A dog sweats or perspires chiefly through his tongue and not through the skin as do humans. Further, the heavy coat of the sun and air; it affords a curtain of air that does not permit either heat or cold to pass through, just as wool for the same reason keeps out the cold and keeps in the heat.
The practice of clipping longhaired dogs in summer adds little to their comfort; it may benefit the dog’s skin, however.
If a dog, longhaired or shorthaired, pants much and slobbers at the mouth in the summer time, it is not a sign of rabies or other dangerous condition; the more the dog sweats out of his tongue and mouth, the better for him; it is a healthy condition.
Excerpted from Dog World magazine, April 1923, Vol. VIII, No. 4. For back issues of Dog World, click here.