Shedding in dogs: causes, how long it lasts and what to do about it

4 July 2026

Shedding is a natural process of coat renewal that occurs in most dogs, regardless of breed, age, or lifestyle. Thanks to this process, old hair is gradually replaced by new growth, allowing the coat to maintain its protective properties, shine, and density. However, not every owner knows where the line falls between normal seasonal shedding and excessive hair loss, which may indicate health imbalances.

The condition of the coat is influenced by more than just the season. Full nutrition, grooming, living conditions, and the dog's overall health play a vital role. In some cases, special vitamins for dogs may be required if the body lacks the nutrients needed to support healthy skin and coat.

In this article, we will look into why dogs shed, when this process is considered normal, how long it typically lasts, and which factors can make it overly intense. We will also discuss the characteristics of different coat types, proper care during shedding, and instances when you should not delay a visit to the veterinarian.

What Is Shedding in Dogs and Why Does It Happen?

This is the process of natural coat renewal. Each individual hair has its own life cycle: it grows, functions for a certain period, and then gradually dies and falls out, making room for new hair. The process occurs continuously but becomes significantly more noticeable at certain times of the year.

The coat performs far more functions than it might seem at first glance. It protects the skin from ultraviolet rays, mechanical damage, moisture, cold, and overheating. This is why the body regularly updates the coat, maintaining it in proper condition.

In most breeds, the coat consists of two main types of hair. Guard hairs form the outer layer and protect against rain, dirt, and sun, while the soft undercoat is responsible for thermal insulation. It is the undercoat that most frequently sheds in spring and autumn, making owners feel as though their dog has started shedding excessively.

At the same time, it is impossible to avoid shedding entirely. Even breeds considered low-shedding gradually lose old hair. The only difference lies in how intensively this happens and how noticeable the process is to the owner.

Do All Dogs Shed the Same?

Shedding intensity depends heavily on genetics. This is why different breeds can lose hair in completely different ways, even under identical living conditions. For example, Labradors, Huskies, Samoyeds, German Shepherds, and other breeds with a dense undercoat typically experience a very pronounced seasonal shedding. During this period, hair can fall out in whole clumps, which is a completely natural phenomenon.

Short-haired dogs also shed, though many owners mistakenly believe otherwise. Their hair is simply shorter, making it easier to miss. Conversely, some breeds have hair that grows continuously, much like human hair. These include Poodles, Bichons, and certain other toy dogs. They require regular grooming but leave significantly less hair on furniture or clothing.

What Factors Affect Shedding Intensity?

The amount of hair lost during shedding is determined by several factors at once. Specifically, these include:

breed and coat type;
presence of a dense undercoat;
season;
daylight length;
living conditions;
nutritional completeness of the diet;
the dog's age;
physical activity level;
overall health status.

This is why two dogs of the same breed can shed differently. If one regularly walks outdoors, receives a balanced diet, and gets enough exercise, while the other spends most of its time in an apartment, their seasonal coat renewal can progress quite differently.

When Do Dogs Shed Most Frequently?

Most often, active shedding occurs twice a year: in spring and autumn. In spring, the body gets rid of the thick winter undercoat to cope with the heat more easily, and in autumn, it begins to form a new insulating layer ahead of the cold season.

The primary natural signal for shedding to begin is not the air temperature, but the change in daylight length. This is why seasonal coat renewal usually has clear timeframes for dogs that spend a lot of time outdoors.

The situation is somewhat different for indoor pets. Constant warmth, air conditioning, central heating, and artificial lighting alter natural biological rhythms. Because of this, hair may fall out gradually throughout the year without pronounced seasonal peaks. This is not always a sign of health issues if the dog's overall condition remains good.

At the same time, shedding can temporarily intensify outside the typical season after pregnancy, lactation, experienced stress, or a change of residence.

How Long Does Shedding Last in Dogs?

On average, seasonal shedding lasts from two to six weeks. However, this is only an approximate timeframe, as the rate of coat renewal depends on many individual characteristics.

Young, healthy dogs usually pass through this period faster, whereas the process can drag on in senior animals. Proper nutrition, sufficient physical activity, regular brushing, and the general state of the body also play an important role.

During seasonal shedding, hair loss gradually intensifies, reaches its peak, and then naturally declines. However, if hair continues to fall out intensively for several months without an obvious reason, or if bald spots, skin redness, or severe itching appear, this can no longer be considered a normal physiological process.

Main Causes of Heavy Shedding in Dogs

Profuse hair loss is not always associated with seasonal undercoat changes. Sometimes, the body uses this way to signal the impact of external or internal factors.

One of the most common causes is an unbalanced diet. To form a healthy coat, the body requires high-quality protein, essential fatty acids, vitamins, and minerals. If a dog lacks sufficient amounts of these nutrients over a long period, the coat can lose its shine, become brittle, and shed more intensively.

Another factor is stress. Moving to a new home, the arrival of a new family member, changes in the daily routine, renovations, or even prolonged separation from the owner can affect the body's hormonal balance. As a result, a temporary increase in shedding sometimes occurs as a reaction to emotional stress, though the coat condition usually normalizes gradually once the cause is removed.

What to Do if a Dog Sheds Heavily?

Intense shedding in itself is not always an abnormality. In most cases, it is a natural seasonal process that simply appears more pronounced in certain breeds or living conditions. It is important not to react solely to the amount of hair, but to evaluate the animal's overall condition: activity, appetite, skin health, and behavior.

If the dog feels fine and the shedding aligns with seasonal coat changes, the owner's primary task is to support the natural processes of coat renewal. This includes several basic actions:

regular brushing, especially for breeds with an undercoat;
monitoring diet quality with sufficient protein and fatty acids;
a stable drinking regime;
preventive treatments against ectoparasites;
maintaining the usual physical activity without sudden changes in workload.

It is worth emphasizing separately that the mechanical removal of dead undercoat is a key factor during the shedding period. If it is not brushed out, the hair gets trapped in the coat, which can place an extra load on the skin and slow down coat renewal.

What NOT to Do During Shedding?

A common mistake is excessive interference with the natural process. For example, frequent bathing of the dog using harsh or inappropriate shampoos. This can disrupt the skin's protective lipid layer, which, as a result, sometimes only intensifies hair loss.

Another undesirable practice is self-prescribing vitamin or mineral complexes without understanding the root cause of the problem. An excess of certain trace elements can be just as harmful as a deficiency. In cases where nutritional deficiencies or poor coat condition are suspected, the necessity of supplements should be determined by a veterinarian after examining the animal.

Shaving a double-coated breed down to the skin deserves a separate mention. This approach does not solve the shedding problem and, in some cases, can impair natural thermoregulation and the structure of the new coat.

When Is Dog Shedding a Reason to See a Vet?

There are situations when hair loss goes beyond physiological norms. In such cases, it is important not to delay a consultation, since the coat is often merely an external marker of deeper processes within the body.

Reasons for seeking professional care include the appearance of localized bald patches, inflamed areas, persistent itching, or pronounced skin flaking. A sharp change in the coat's structure—if it becomes brittle, dull, or loses density—is also a warning sign.

In more complex cases, accompanying symptoms appear: changes in appetite, decreased activity, an unpleasant odor from the skin, or a general deterioration in the animal's condition. This may already indicate dermatological, parasitic, or endocrine disorders.

It is practically impossible to determine the cause on your own in such situations. Even similar external manifestations can have different origins, so diagnosis must be conducted by a veterinary specialist.

How to Reduce Dog Hair Around the House During Shedding?

It is impossible to avoid hair in the home entirely, but its amount can be significantly reduced. The basic principle is controlling the source, not just the consequence—meaning the regular removal of dead hair from the animal.

Systematic brushing remains the most effective tool. During active shedding, its frequency can increase to a daily routine, especially for dogs with a thick undercoat.

Additionally, space organization matters: the dog's resting areas require regular cleaning, since that is where the largest amount of hair accumulates before spreading across the apartment.

It is also worth noting that wet cleaning during this period is more effective than dry cleaning, as fine hair is more easily removed from surfaces and textiles.

Prevention of Excessive Shedding in Dogs

A stable coat condition directly depends on long-term living conditions. A diet with a sufficient content of protein, fatty acids, and trace elements forms the baseline for normal coat renewal.

Regular veterinary check-ups and parasite control are equally critical. Even minor skin irritations can influence the intensity of hair loss.

In most clinically healthy dogs that receive a balanced diet and basic care, seasonal shedding proceeds predictably and causes no complications.

Conclusion

Shedding is an absolutely normal physiological process that requires no intervention in most cases. Its intensity can vary depending on the breed, living conditions, and overall health of the organism.

The key criterion remains the accompanying symptoms rather than the amount of hair itself. If they are absent, the process is considered normal and controlled. If additional signs appear, it is advisable to conduct a veterinary diagnosis to clear up any doubts.