Brachycephalic Dogs….and Heat!
Most people are not familiar with the term “Brachycephalic,” but if you own a Pug, Boston Terrier, Pekingese, Boxer, Bulldog, Shih tzu or any one of the other breeds with “pushed in” faces, you should become familiar with this word. The word comes from Greek roots “Brachy,” meaning short and “cephalic,” meaning head.
Brachycephalic dogs have been bred so as to possess a normal lower jaw, that is, one in proportion to their body size, and a compressed upper jaw.
HEAT STRESS – Because of all these upper respiratory obstructions, the brachycephalic dog is an inefficient panter. A dog with a more conventional face and throat is able to pass air quickly over the tongue through panting. Saliva evaporates from the tongue as air is passed across and the blood circulating through the tongue is efficiently cooled and circulated back to the rest of the body.
In the brachycephalic dog, so much extra work is required to move the same amount of air that the airways become inflamed and swollen. This leads to a more severe obstruction, distress, and further over-heating.
BRACHYCEPHALIC DOGS ARE THE MOST
LIKELY CANDIDATES FOR HEAT STROKE.
Altogether, the upper airways of the brachycephalic dog compromises his or her ability to take in air. Under normal conditions the compromise is not great enough to cause a problem; however, an owner should take care not to let the dog become grossly overweight or get too hot in the summer months. Be aware of what degree of snorting and sputtering is usual for your individual pet plus, should your pet require general anesthesia or sedation, your vet may want to take extra precautions or take radiographs prior to assess the severity of the syndrome.
Thanks to marvistavet.com for the above information!