Every summer, groomers have the same conversation. The owner wants the dog clipped short because it is hot. The groomer explains why that is the wrong answer for a double-coated dog.
Here is that explanation in full.
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What a double coat is
Guard hairs — the outer layer. Coarse, straight, water-repellent, and they carry the colour. They shield the skin from sun, water, dirt and insects.
Undercoat — dense, soft, woolly. It traps air close to the skin.
Trapped air is an insulator, and insulation works in both directions. In winter it holds body heat in. In summer it holds ambient heat out and keeps a layer of cooler air against the skin.
The dogs with this structure: Labradors, Golden Retrievers, German Shepherds, Huskies, Malamutes, Corgis, Border Collies, Akitas, Bernese Mountain Dogs, Australian Shepherds, Pomeranians, Chows, Newfoundlands and most spitz breeds.
Why shaving does not cool them
Dogs do not sweat through their skin. Apart from a small amount through the paw pads, dogs cool by panting — evaporating water from the airways. Removing coat does not open up a cooling mechanism they do not have.
You remove the sun barrier. Guard hairs block direct solar radiation. A shaved dog in sunlight absorbs heat directly onto skin.
You remove the insulating air layer, so the skin is now exposed to the ambient air temperature rather than buffered from it.
You expose skin that has never seen sun. Sunburn is a real risk, and in pale-skinned dogs, repeated exposure raises the risk of skin cancer over time.
The dogs that do genuinely benefit from a summer clip are single-coated breeds — Poodles, Bichons, Shih Tzus, Maltese — which have no undercoat and whose hair grows continuously.
What happens to the coat
This is the part that is hardest to undo.
Guard hairs and undercoat grow at different rates. Undercoat grows faster. Shave both and the undercoat comes back first and fastest, often crowding out the guard hairs.
Common outcomes:
- Patchy regrowth
- A change in texture — the coat comes back woolly rather than sleek
- A change in colour
- Loss of water repellency
- Permanently altered coat in some dogs, particularly older ones
There is a recognised phenomenon in some breeds where the coat does not regrow properly after clipping at all.
What to do instead
Remove the undercoat, not the coat. Loose dead undercoat blocks airflow and holds heat. Raking it out improves circulation to the skin and genuinely helps a dog cool — without touching the guard hairs.
SleekEZ Deshedding Grooming Tool
A wave-patterned blade that lifts dead undercoat without cutting the guard hairs. Use light pressure and work in sections — the point is to remove what has already come loose, not to thin the coat.
Bath and blow dry. A bath followed by a proper high-velocity dry blows out an enormous amount of undercoat — more in an hour than a week of brushing. This is what a groomer does, and for a double-coated dog in full blow it is the single most effective thing available.
Trim, do not shave. Tidying the feet, the trousers, the sanitary area and the feathering is fine. Taking the coat down to the skin is not.
Manage the environment instead:
- Walk early and late, and use the pavement test
- Provide shade and airflow
- A cooling mat or a damp towel to lie on
- A cooling vest that works by evaporation
Ruffwear Swamp Cooler Dog Vest
An evaporative cooling vest — soaked, wrung out and worn. It works with the dog’s coat rather than against it, and it is a far better answer to a hot walk than a clipper.
- Fresh water always, and on every walk
- A paddling pool
- Frozen food toys
When shaving is appropriate
There are legitimate medical reasons, and they are decided by a vet:
- Surgery or a wound needing access
- Severe matting, where the coat cannot be saved and dematting would be cruel
- Certain skin conditions requiring topical treatment
- Some cases of severe heat intolerance in elderly or ill dogs, on veterinary advice
In those cases the coat is a fair trade. For summer comfort in a healthy dog, it is not.
What to say to a groomer
A good groomer will decline to shave a double coat and explain why. If one agrees without comment, that is worth noticing.
Ask instead for a deshedding treatment: bath, high-velocity dry, and a thorough rake-out. Most dogs leave visibly lighter and dramatically less hairy, with the coat intact.
And if it has already happened
It is not a disaster. Many dogs regrow normally, particularly young ones. Keep the dog out of direct sun while the coat is short, use a dog-safe sunscreen on exposed skin if they must be out, and do not repeat it.
The coat may take a year or more to return fully, and in some dogs it does not return quite as it was. That is the risk, and it is the reason the answer is a rake rather than a clipper.
