A dog's cooling system is far less efficient than ours. He cannot sweat across his body; he relies on panting to move heat out and loses a little through his paw pads, which is why indoor heat that merely makes you uncomfortable can genuinely endanger him, especially in a flat that traps warmth or a room under a hot roof. Heatwave care indoors is about lowering the temperature of the space he actually rests in, giving him choices of cool places, and recognising early the signs that his own cooling is no longer keeping up.
Cooling the rooms he really uses
Work on the room, not just the dog. Close blinds and curtains on sun-facing windows before the sun hits them, open windows at night and early morning when the air outside is cooler, then shut the heat out again. Move his bed into the coolest room — a tiled kitchen or bathroom floor often holds the lowest temperature in the house — and let him choose where to lie rather than insisting he stays on a warm, padded bed. A fan helps move air and makes panting more effective, but it does not cool a dog the way it cools sweating skin, so treat it as support for the other measures rather than the main one.
Cool surfaces, water and frozen extras
Lay a damp towel or a purpose-made cooling mat on the floor and let him decide whether to use it; some dogs love them and some move off within minutes, and both responses are fine. Do not drape wet towels over his body, because a towel that warms up in place traps heat against him. Put fresh water in several places so a bowl is always near, refill it with cool water through the day, and offer ice cubes or frozen treats made from his normal food as a cooling game. Lightly wetting his paws, belly and ears can help, but never plunge an overheating dog into cold water — that is a veterinary situation, not a home remedy.
Activity, feeding and the shape of a hot day
Shift the whole day earlier and later: walks at dawn and after dark, meals when the house is coolest, and play kept short and gentle even indoors, because excited indoor games in hot air raise his temperature too. Appetite often dips in heat, which is normal across a day or two if he is drinking and otherwise himself, but keep routines calm and predictable. Dogs at highest risk — flat-faced breeds, puppies, elderly dogs, overweight dogs and those with heart or breathing trouble — should be watched most closely and kept in the coolest space you have, with zero exercise in the heat of the day.
The signs that mean stop and call the vet
Heavy panting that does not ease with rest in a cool room, thick drooling, bright red gums, restlessness followed by unusual quietness, wobbliness, vomiting or collapse are all reasons to contact a veterinarian or emergency practice immediately, while moving him to the coolest place available and offering small drinks. Heatstroke escalates quickly and home measures are a bridge to professional care, not a substitute for it. Afterwards, note what temperature and activity preceded the episode so you can tighten the plan. KinsLe Family Sharing puts the heat plan — coolest room, walk times, watch-for signs — in front of every family member and visitor, so nobody undoes the careful work with a cheerful midday invitation to play.