In late autumn, fog often lingers over neighbourhoods, fields and forest edges well into the afternoon. What looks cosy from indoors changes the rules outside: contours blur, distances become hard to judge, and a dog is barely recognisable after just a few metres. Even our Vico vanishes from view surprisingly quickly in thick fog, and he travels barely thirty centimetres above the ground. With a few simple adjustments, the two of you can still head out safely.
Why fog is trickier than darkness
At night, street lamps, headlights and lit windows help. Fog, on the other hand, swallows light and contrast even in broad daylight. Drivers spot pedestrians at the roadside much later than in clear conditions, and a small dog close to the ground disappears into the grey even faster.
There is a second point that is easily forgotten: your dog navigates mainly by nose and ears. The fog itself hardly bothers him, so he runs, sniffs and wanders off just like on any other day. You simply cannot see him any more. In fog, it is not only important that others can see your dog, but also that you can keep him in sight yourself.
Active light beats reflectors in fog
Reflectors are useful, but they have one weakness: they only shine when light hits them, for example from a headlight. In fog, that very light is scattered and often arrives late or weakened. An active light source on your dog is therefore the more reliable choice in poor visibility, because it can be seen from every direction, even during the day.
A light-up collar such as the LED LightCollar has proven itself: rechargeable via USB, weatherproof and trimmable to your dog's neck size. A flashing mode stands out even more in the grey. The pleasant side effect: the light helps not just traffic, but above all you. A glowing ring stays visible even when your dog's coat has long since merged with the fog. Think of yourself too: a bright jacket and a head torch or pocket torch complete the pair of you. You can read about other light aids and how to combine them in our article Visibility in the dark.
Keep your dog in sight
In thick fog, a simple rule of thumb applies: your dog should only move as far away as you can actually see. In practice, that means shorter distances, more frequent recalls with a reward, and the leash whenever you are near a road. Where recall is not yet reliable, a long line is a good middle ground between freedom and control.
In case something does go wrong, a little precaution on the collar pays off. With the VicoTrack collar, your dog's name and your phone number are engraved directly onto the tag, and the integrated pocket holds an Apple AirTag. Tracking and engraving replace neither leash nor training, but they significantly improve the chances of finding each other again quickly if you ever lose each other in the grey.
Adjust your route and timing
In fog, not every walk is equally good. These adjustments make things easier for both of you:
- Choose familiar paths: On routes you know, you know where junctions, ditches and roads are, even when you cannot see them.
- Keep your distance from traffic: Where possible, plan the walk along field and neighbourhood paths rather than beside the road. Where you need to cross a road, keep your dog close and wait until you can clearly place every vehicle.
- Use the midday window: Fog often lifts around midday. If your day allows it, schedule the long walk for that time and keep the morning and evening rounds shorter.
- Be considerate of wildlife: At the forest edge, encounters in fog can be very sudden, for both sides. Stay on the paths and keep your dog on the leash there.
Relaxed through the grey season
Fog is no reason to give up lovely walks. With an active light source, a little more closeness between you and your dog and a wisely chosen route, foggy days can even become atmospheric. You will find more gear for grey and dark days in our collection Visible in the Dark.
Frequently asked questions
Can my dog run off-leash in fog?
Where off-leash walking is generally allowed, there is nothing against it in open terrain with a reliable recall. In thick fog, near roads and at the forest edge, the leash is the better choice, because you simply see dangers too late.
Are reflectors enough in fog?
Reflectors only work when light hits them directly. In fog, headlight beams are scattered, so reflectors respond later and more weakly. Combine them with an active light source such as a light-up collar or an LED pendant.
Does my dog see better in fog than I do?
Dogs cope with twilight better than humans and rely heavily on nose and ears, which is why they often seem completely unimpressed by fog. The real risk is that others cannot see him and that you lose sight of him. That is exactly what light, closeness and a leash are for.


