Most people are aware that leaving a pet in a locked car on a 100F degree day would be dangerous. However, it is the seemingly mild days of spring (and fall) that pose great danger, too. Driving around, parking, and leaving your pet in the car for “just a minute” can be deadly. An 85 F degree day can heat up the interior of a car to 120-130 F degrees in 30 minutes or less – even with the windows cracked.
Consider your pet’s housing. If they are kept outdoors, do they have shade and fresh water access at all times? I have treated one case of heat stroke in a dog that did indeed have shade and water while tethered under a deck, but had gotten the chain stuck around a stake in the middle of the yard — no water or shade for hours. If you live in a warm climate, it is a good idea to hose down the dog before work, at lunch or whenever you can to provide extra cooling (if you dog is not over heated in the first place).
Signs of heat stroke
Signs of heat stroke include (but are not limited to): body temperatures of 104-110F degrees, excessive panting, dark or bright red tongue and gums, staggering, stupor, seizures, bloody diarrhea or vomiting, coma, all leading to death. Brachycephalic breeds (the short-nosed breeds, such as Bulldogs and Pugs), large heavy-coated breeds, and those dogs with heart or respiratory problems are more at risk for heat stroke.
If you suspect heat stroke in your pet, seek Veterinary attention immediately!
Use cool water, not ice water, to cool your pet. (Very cold water will cause constriction of the blood vessels and impede cooling.) Do not aid cooling below 103 F degrees – some animals can actually get hypothermic, too cold. Offer ice cubes for the animal to lick on until you can reach your Veterinarian. Just because your animal is cooled and “appears” OK, do NOT assume everything is fine. Internal organs such as liver, kidneys, brain, etc., are definitely affected by the body temperature elevation, and blood tests and veterinary examination are needed to assess this.
Antifreeze is actually a year-round hazard. With the warmer temperatures of summer, cars over heat and may leak antifreeze. (This is the bright green liquid found oozing from that car with the engine fan on.) Also, people change their antifreeze and may spill or leave unused antifreeze out where pets can access it. Antifreeze tastes sweet and is inviting to pets (and children). It is also extremely toxic in very small amounts. Call your Veterinarian (or Physician) immediately if any ingestion is suspected. A safe alternative to Ethylene Glycol antifreeze is available, it is called propylene glycol, and while it does cost a small amount more than ‘regular’ antifreeze, it is worth the piece of mind.
We would like to thank : Janet Tobiassen Crosby, DVM,
Your Guide to Veterinary Medicine as listed on About.com for the information listed above