Shedding: what is normal, and what is not

Shedding is not a grooming failure. It is a healthy coat replacing itself, and the only thing brushing changes is whether the dead hair ends up on your brush or your sofa.

What matters is telling normal shedding from hair loss. Normal shedding is even across the body and leaves a full coat behind. Bald patches, thinning in one area, broken hairs or itchy skin are a different thing entirely, and no brush fixes them.

Why double coats shed the way they do

A double coat has two layers: coarse guard hairs on top, and a dense soft undercoat beneath. The undercoat is what insulates, and it is what is shed in quantity twice a year as the coat changes for the season.

That is why a Labrador or a husky produces alarming volumes of fluff in spring while a greyhound barely sheds at all — it is coat structure, not coat health.

Indoor pets shed more constantly and less seasonally, because the seasonal trigger is day length and artificial light blurs it. A cat that sheds all year in a centrally heated flat is normal.

Why brushing works, and what it does not do

Brushing does not reduce how much hair a pet sheds. It collects the hair before it reaches your furniture, and it removes the dead undercoat that would otherwise mat.

That distinction matters commercially: no brush, however well marketed, reduces shedding. What a good deshedding tool does is reach the undercoat rather than skimming the guard hairs — which is the same principle as line brushing on a cat.

Stop before the skin pinks up. Deshedding blades work by pulling loose undercoat through; over-use on the same patch causes irritation and, with aggressive tools, can damage guard hairs.

Never shave a double-coated dog to reduce shedding

It is the most common well-intentioned mistake in this area.

• The undercoat insulates against heat as well as cold. Removing it can leave a dog less able to cope with summer, not more
• It exposes skin to sunburn, particularly on pale-skinned dogs
• It does not stop shedding — it produces shorter hair, in the same quantity
• It may not grow back correctly. Clipped double coats can come back patchy or with altered texture

Breeds affected include huskies, malamutes, German shepherds, golden retrievers, Bernese, Newfoundlands, Samoyeds, akitas, chow chows and Pomeranians. If in doubt, ask your groomer before the clippers come out.

When shedding is a health signal

See your vet for any of these, because they are not shedding:

• Bald patches, or thinning that is symmetrical on both sides — that pattern points to hormonal causes such as hypothyroidism or Cushing's
• Red, flaky or scabby skin, or a smell
• Constant scratching, licking or chewing — fleas and allergies are the usual causes, and a cat can be flea-allergic with very few fleas present
• A sudden change in volume, especially with any change in appetite, thirst or energy
• A coat that has become dull, greasy or clumped — in cats, this usually means they have stopped grooming themselves, which is often pain

Stress also causes a real, temporary shed — many owners see it at the vet, where a frightened cat or dog releases a cloud of hair on the table. That is normal and passes.

Practical reduction, honestly

You cannot reduce shedding. You can move it:

• Brush outdoors where the weather allows
• Brush more often in shorter sessions — five minutes daily beats thirty minutes weekly for both coat and tolerance
• Bathe before a heavy shed and dry thoroughly; loosened undercoat brushes out far more easily
• Feed properly. Coat quality reflects nutrition, and a complete diet does more for a coat than any supplement
• Keep up flea treatment. A large share of "bad coat" is undiagnosed flea allergy

Common questions

Is my pet shedding too much?

If the shedding is even across the body and the coat stays full with healthy skin, it is normal however alarming the volume. Bald patches, symmetrical thinning, redness or constant scratching are not shedding and need a vet.

Will brushing reduce shedding?

No. It collects the hair before it reaches your furniture and removes dead undercoat that would otherwise mat. No brush changes how much a pet sheds.

Should I shave my double-coated dog in summer?

No. The undercoat insulates against heat as well as cold, shaving exposes skin to sunburn, it does not stop shedding, and the coat may grow back patchy.

Why does my indoor cat shed all year?

Because the seasonal trigger is day length, and artificial light blurs it. Indoor pets tend to shed more evenly year round rather than in two big seasonal changes.

How often should I brush?

Short coats weekly. Double coats several times a week, daily during a seasonal shed. Short frequent sessions beat long occasional ones.

My cat's coat has gone greasy and clumped. Is that shedding?

No. That usually means your cat has stopped grooming itself, which is often pain — joint pain, dental pain or illness. Worth a vet visit rather than more brushing.