Watch out for heatstroke - symptoms include panting, lethargy, drooling, fever, vomiting and collapse. Call your veterinarian right way if you see these signs.
Give your pet extra water.
Offer your pet several ways to cool off - leave a fan on where your pet can sit in front of it, add ice cubes to their water or offer a cool treat like a Kong stuffed with wet food or peanut butter then frozen.
NEVER leave your pet alone inside a car.
Take your walks in the morning or evening when it is cooler and avoid hot sidewalks.
Be alert for coolant leaking from your vehicle - dogs are attracted to the sweet taste of coolant and just a small amount can make your dog sick or even cause death. Call your vet right away if you believe your dog has ingested coolant.