so your brachiocephalic breeds, the ones with short noses -- >> reporter: like pugs or frenchies. >> your dogs with medical conditions, older geriatric dogs, overweight dogs, they can't tolerate the heat. they can overheat very quickly. >> reporter: how do you know if they are overheating? >> understand the signs. the excessive panting. difficulty recovering. on to things like vomiting, diarrhea. ataxia, where they become wobbly, know that you have a situation on your hands, that you need to address that. >> reporter: at that point cool your dog off with water and call your vet. lucky for us it's easy to prevent all of that. his tips? always supervise your pets when they're outside. give them plenty of shade, clean water to drink and play in like these kiddie pools, and never leave your pet in the car. if your dog does want to go for a walk, early mornings and late evenings are best. >> we'd recommend that people actually place your hand on the pavement first. most recommendations are between five and seven seconds. if you can leave your hand on the asphalt for that period of time, i