Matting and Shave Downs
Why coats felt, and what can and cannot be undone
A Mat Is Not a Tangle
A tangle is hair crossed over itself. Pull it apart and it comes apart. A mat is a different thing, and treating one like the other is where most of the damage starts.
Coats shed constantly. On a short coat the dead hair falls out and lands on the sofa. On a long, curly or dense coat it does not fall anywhere. It stays caught in the living hair around it, and every time the dog moves, that trapped hair works tighter, the way a rope tightens under load. Add damp and the fibers swell and lock closer still.
So a mat is not the coat misbehaving. It is shed hair that had nowhere to go, being compacted a little more by every walk, every scratch and every nap.
That is why it is time sensitive rather than cosmetic. A mat that would have combed out in ten minutes last month may not come out at all today.
It also means how much your dog sheds decides how fast this happens, and not in the direction most people assume.
What Happens When a Coat Is Too Matted to Save
Once a coat has felted past the point of combing, what happens next depends entirely on which breed you own, and the two outcomes are not remotely the same.
For a Poodle, a Bichon, any of the Doodles or a Persian cat, a shave down works. The dog can be taken back to the skin and in a few months there is a coat again, the same coat as before. Nobody wanted that haircut, but the animal is comfortable the same afternoon and nothing is lost permanently.
For the second group, shaving costs the coat for good, and almost nobody is told which group they are in when they buy the puppy.
The Breeds That Should Never Be Shaved
These are the heavy double coated breeds. The coarse outer guard hairs and the soft undercoat underneath do two different jobs, and a clipper takes both off at once.
What grows back is often undercoat first: softer, denser and woollier than what was there before, sometimes patchy, and sometimes it never recovers its old texture at all. The coat that was keeping sun off the skin in summer and cold out in winter is the thing that just went in the bin. A shaved Samoyed is not a cooler dog, it is a dog with less protection.
If you own one of these, matting is not a problem you can shave your way out of:
Alaskan Malamute, American Eskimo Dog, Belgian Tervuren, Bernese Mountain Dog, British Longhair, Chow Chow, Cymric, Great Pyrenees, Keeshond, Komondor, Leonberger, Minuet, Newfoundland, Otterhound, Pomeranian, Pomsky, Puli, Ragamuffin, Rough Collie, Saint Bernard, Samoyed, Shetland Sheepdog, Tibetan Mastiff.
That is not a reason to avoid these breeds. It is the reason the brushing routine is not optional on them, because there is no rescue at the other end of neglecting it.
Never Cut a Mat Out With Scissors
If you take one thing from this page, take this. The ASPCA puts it as plainly as it can be put: never cut mats out with scissors.
The reason is anatomy. A dog's skin is thin and loose, far looser than yours. A mat sitting tight against the body pulls the skin up into itself, so the base of what looks like a lump of hair is frequently skin. Slide a blade under it and you are cutting the dog, and you will not know until it bleeds.
It goes wrong most often exactly where mats form first: behind the ears, in the armpits, between the back legs. Those are the places the skin is thinnest and the animal is most likely to flinch at the wrong moment. The wounds are often found late, after they have become infected, because the coat hides them.
A groomer takes mats off with clippers, going underneath flat against the skin, which is a completely different action from closing a blade around one. If a mat has to come off today, that is the tool.
Do Not Bathe a Matted Coat
This is the mistake with the best intentions behind it. The coat looks a mess, so it goes in the bath.
Water is what turns a bad coat into an unsalvageable one. Wet hair swells and then shrinks as it dries, and every mat contracts with it. Warm air from a dryer sets the result. A coat that arrived with mats you could still work through can come out of a bath with mats fused into a solid sheet, and that is not reversible.
The order is always the same. Get the coat clear first, then wash it. If you cannot get it clear, it goes to somebody who will take the mats off before any water is involved.
The same holds for rain and swimming. A dog that mats easily and gets soaked needs combing through as it dries rather than being left to dry on its own.
Why the Skin Looks Sore After a Shave
A tight mat holds moisture against skin and keeps air off it. Given enough time the skin underneath is red, thin and sore, and in bad cases has open patches the coat has been hiding.
This matters for what happens after a shave down, because owners see that skin for the first time and assume the groomer did it. Bruising, redness and rawness that appear the moment a mat comes off were almost always there beforehand. The mat was the cause and the cover at the same time.
It is also why a groomer will sometimes stop and tell you the dog needs a vet rather than finishing the job. That is the right call, not a way out of the work.
A dog that has been carrying a matted coat usually behaves differently afterwards, and not only because it is tidier. It has been wearing something that pulled at its skin with every step.
Where Mats Start, and How to Prevent Them
Mats do not appear evenly. They start where hair is rubbed, and almost every animal has the same short list.
- Behind and under the ears, where the ear flap moves against the head all day.
- The armpits and the groin, thin skin plus constant movement.
- Under a collar or harness, which is friction applied for hours at a time. A dog that mats easily should have the harness off indoors.
- The trousers and the tail base, the part the animal reaches last and the owner looks at least.
The technique that keeps them clear is line brushing. Lift a section of coat, work from the skin outward in a narrow band, then drop the next layer down and do it again. It is slower than brushing the surface and it is the only method that reaches where mats actually form.
Then check with a comb rather than a brush. A slicker glides over a felted layer quite happily. A comb that will not pass to the skin is telling you the truth.
Most owners of curly breeds meet all of this for the first time during the coat change at six to twelve months, when the puppy coat is replaced and a dog that never matted suddenly does.
The puppy coat change, and getting through it · Combing and bathing at home
Your Breed
How much coat work your own dog or cat needs, and what tends to go wrong on that coat.
Find your breed →How Often to Groom
Booking intervals by breed, and the brushing routine that has to happen in between.
Find your interval →What It Costs
Why de matting is billed by time, and what a shave down actually runs.
See typical prices →