By now I would hope everyone has the message ... DO NOT LEAVE YOUR PET IN THE CAR and HOT Pavement can BURN your Paws.... but these are not the only ways the heat can seriously harm your pet. Something as easy as an evening walk may be too much. It is important that you know the signs or heat stroke, how to treat it and the hours of your vet/location of the after hours vet. My biggest tip.. right now stop and save in your phone your veterinary office phone number and the closest after hours veterinary office with directions. In the meantime please review the signs of heat stroke and what you need to do before you go to the veterinarian.
Not familiar with the signs of heatstroke... this is a pretty good video by Greg Martinez DVM.