More from that site regarding Heat Stroke:
http://www.mydogiscool.com/b_action.phpSigns of Heat StrokeSigns of heat stroke are intense, rapid panting, wide eyes, salivating, staggering and weakness. Advanced heat stroke victims will collapse and become unconscious. The gums will appear pale and dry. If heat stroke is suspected and you can take the animal's temperature rectally, any temperature above 106 degrees is dangerous. The longer the temperature remains at or above 106 degrees the more serious the situation. If you return to your car or the area in which the animal was confined and find your pet seems to be highly agitated, wide-eyed and panting uncontrollably ... start for the nearest animal hospital right away with the air conditioning at full blast. Otherwise get the dog to a cool area and begin the treatment for heat stroke.
Treatment for Heat StrokeTake the pet's temperature rectally if possible. A body temperature of about 105 degrees or higher is probable evidence for heat stroke. Place your pet in a tub of cool running water or spray with a hose being sure the cool water contacts the skin and doesn't simply run off the coat. Thoroughly wet the belly and inside the legs. Run the cool water over the tongue and mouth. Take a rectal temperature if possible to know when to stop cooling. A safe temperature is about 103 degrees. A small dog will cool down much faster than a large dog. Once the temperature gets to 103 or 104 degrees do not cool the pet any further because the cooling effects will continue to bring the temperature down even further. Seek veterinary attention as soon as possible.
If you are near an animal hospital, go there right away. At the animal hospital they may administer oxygen, cortisone and dextrose to help protect the traumatized cells. The staff can provide proper cooling measures and monitor the dog's temperature, heart rate and provide oxygen which some evidence indicates may help protect stressed body cells. Providing intravenous fluids and anticoagulants may be utilized as well.
