The 40-kilo white dog on the trail is working. Here's what to do, especially with your own dog.

Sometime between June and September, on a pasture crossed by a perfectly ordinary trail, a very large white dog will stand up out of the grass, place itself between you and a flock, and start barking. This is a patou (Pyrenean Mountain Dog) or, on the Italian side, often a Maremma-Abruzzese sheepdog, and everything about the next two minutes depends on understanding one thing: it is not attacking you. It is doing its job.

These dogs are placed inside the flock as puppies and grow up bonded to the animals, not to people. As wolves have returned to the Alps, guardian dogs have become steadily more common, which means the classic postcard meadow walk now comes with a real protocol. Barking, approaching, and circling are the dog assessing you; the encounter is routine and ends calmly if you behave predictably.

Why your dog raises the stakes

To a guardian dog, your dog is not a tourist: it reads as a canid near the flock, the exact silhouette it exists to intercept. This is why encounters that are mildly stressful for dogless hikers can escalate with a dog present, and why we flag pasture crossings in our trail notes. Two of your dog's instincts work against you here: barking back (a challenge) and hiding behind your legs while leashed (which traps the interaction at your body). Herding breeds are a special case: the urge to gather sheep is precisely the behaviour a guardian dog will not tolerate, which is why our safety guide tells Border Collie and Aussie owners to keep them leashed through every pasture, no exceptions.

The protocol, step by step

This is the official guidance published by the Savoie tourism board and alpine communes, adapted for hikers with a dog:

1. See the herd early, plan around it. The single best move is a wide detour around the flock, never through it. Scan pastures from a distance; guardian dogs are often invisible in the flock until you're close.
2. Leash your dog and keep it close and calm. Do this before the guardian dog notices you, not after.
3. When the dog approaches barking: stop. Stay calm. No shouting, no sudden movements, no brandishing poles. Avoid staring it in the eye. Take off sunglasses so it can read your face.
4. Show it you're no threat. You can speak quietly. Placing an object gently between you and the dog (a bag, a stick held low, not raised) is recommended. Never try to pet it.
5. The counterintuitive part: if the guardian dog comes to investigate your dog directly, official Savoie guidance says to release the leash and let the dogs interact. A leashed dog can't perform normal canine appeasement rituals and can't retreat: holding it pinned to your legs escalates exactly the confrontation you're trying to avoid.
6. Move on slowly, skirting the herd. The dog may escort you to the edge of its territory. That's normal. If it does not calm down, turn back. A retraced hour beats an incident.

Sources: Explore Savoie (Comité Départemental du Tourisme): Meet a mountain dog; Vallée d'Aulps tourism: How to react to a Pyrenean Mountain Dog

Planning around pastures, not just through them

You can't reliably avoid guardian dogs in summer: transhumance puts herds on the most beautiful meadows in the Alps, which is exactly where the trails go. What you can do: prefer routes where pasture sections are short and visible ahead, keep the leash handy from the first cattle grid, and read recent hiker reports before you go. On DoloPaws, community reports of guardian dogs, herds on trail, and electrified gates appear directly on the trail page, attributed to the hikers who reported them, never silently merged into our ratings.

Browse trails with community reports →

Related reading: the DoloPaws dog safety guide (see the herding breeds section) and taking your dog on cable cars and gondolas.

Last reviewed: July 2026. This guide summarises official tourism-board and commune guidance; it is general information, not a guarantee of any animal's behaviour. When in doubt, turn back.