The test itself: back of the hand, seven full seconds
Crouch down and press the back of your hand flat onto the pavement, in full sun, on the exact surface your dog will walk on. Hold it there and count slowly to seven. If you reach seven comfortably, the surface is generally safe for pads; if the heat builds, stings, or makes you lift your hand early, it is too hot for your dog, full stop. Use the back of your hand rather than your palm because that skin is thinner and less calloused, so it reports heat closer to how a pad experiences it — a palm hardened by years of use will happily pass a surface that blisters a dog.
Why your shoes have been lying to you
Owners misjudge pavement because they never touch it: shoes insulate completely, and air temperature is a poor guide to ground temperature. A merely warm day can push dark tarmac in direct sun far beyond safe levels, while the same street's pale concrete in shadow stays walkable. That is why the test has to be done on the route, in the sunniest stretch, not on your doorstep in the shade. Test each surface change too — a walk that starts on safe shaded slabs may cross a black car park or a freshly laid asphalt patch that fails badly.
Reading the borderline results
A surface that passes at seven seconds in the morning may fail by midday, so treat a marginal result — hot but just bearable — as a fail for a long walk, for a puppy whose pads are still soft, or for an older dog who cannot hurry across. Watch your dog for the live verdict as well: lifting paws alternately, dancing in place at a crossing, or making for the grass verge are a dog telling you the ground hurts, whatever your hand said at the start. Never make him stand waiting on a hot surface at a kerb while traffic passes; move him onto grass or shade for the wait.
What to do when the pavement fails
Failed does not mean no outing. Walk on grass, soil paths, or shaded routes where the ground stayed cool, shorten the trip to a toilet break, or simply wait — pavements shed heat quickly once the sun drops, and an evening walk is usually the comfortable answer. Boots are an option for a dog who accepts them, though they should be fitted and practised before you rely on them. If pads do get burned — limping, licking at feet, pads that look red, blistered, or partly peeled — keep your dog off hard ground, stop him licking, and contact a veterinarian, since pad burns are painful, slow to heal, and easily infected.
Make the check part of the doorway routine
The test takes ten seconds and only protects your dog if it happens before every warm-weather walk, not just on the days that already feel extreme. Keep it tied to picking up the lead: hand on the sunniest slab outside, count, then decide the route. When the result is borderline and you are weighing a shady short loop against waiting until dusk, KinsLe's Kinny can be asked for guidance in the moment, with what you decide sitting alongside your dog's profile for the next hot day.