Dog hair loss: normal shedding or a problem? Causes and care

Dog hair loss is very often just normal seasonal shedding: tufts on the sofa, a brush that fills up in minutes. But when you see thinner patches, itching or flaky skin, it may be linked to habits, environment, diet or unsuitable skin care. Telling the two apart is the first step to choosing the right care.

In this guide you'll see how to distinguish shedding from abnormal hair loss, which factors play a role and which natural solutions usually help keep a stronger, shinier coat, always without replacing your vet's judgement when needed.

Is it normal shedding or abnormal hair loss?

Before looking for "remedies", it's worth working out whether you're seeing a normal physiological process or hair loss that deserves more attention. Shedding is the natural renewal of the coat and usually increases at certain times of year, especially spring and autumn, although in dogs living indoors with heating it can be more constant.

• Normal shedding: hair falls out all over, with no defined bald patches; it comes away when brushing; the skin usually looks normal (no marked redness or scabs).
• Abnormal hair loss: thinner areas or bald patches, brittle hair, excess dandruff, a bad smell, intense itching or constant licking.
• Sudden change: if hair loss increases suddenly or coincides with other changes (appetite, energy, stools, thirst), observe and take notes.

A useful trick is to check the skin in good light: if hair falls but the skin looks even and your dog is comfortable, it usually points to shedding. If there's irritation, flaking or scratching, it's a different situation; our guide to the most common dog skin problems can help you work out what's going on.

What causes hair loss in dogs?

Dog hair loss rarely has a single cause. Usually more than one factor is involved, from climate to diet, stress or bathing routine. Identifying the mix that affects your dog helps you act more effectively.

• Season and temperature: changes in daylight and temperature trigger shedding. Indoors, shedding can last longer.
• Breed and coat type: double-coated dogs (Nordic breeds, for example) tend to drop large amounts of undercoat; short-haired dogs may shed more continuously.
• Brushing frequency and technique: brushing too little lets dead hair build up; brushing badly (with the wrong brush) can break hair or irritate the skin.
• Baths and grooming products: harsh shampoos or very frequent baths can dry out the skin, encouraging flaking and hair loss.
• Environment: heating, air conditioning and low humidity dry out skin and coat. Dust and environmental allergens also play a part.
• Stress and changes in routine: moving house, noise, lack of rest or family changes can show in the skin and coat.
• External parasites: fleas and other parasites can cause itching and licking, making the coat worse.
• Nutrition and hydration: a diet low in quality protein, essential fatty acids or certain micronutrients can lead to a dull, fragile coat.

In practice, many cases improve by getting three pillars right: correct brushing, skin-friendly hygiene and nutritional support for the coat.

How can you reduce dog hair loss naturally?

If your dog is shedding or you notice moderate hair loss without warning signs, these natural measures usually help improve the coat and reduce loose hair at home. Consistency is key: the coat needs weeks to reflect changes in care and diet.

• Strategic brushing: 3–5 times a week (or daily during shedding season) with tools suited to the coat type. The aim is to remove dead hair and spread the skin's natural oils.
• Bathe wisely: avoid over-bathing. Use gentle products and rinse very well, as residue can irritate the skin.
• Humidity at home: if the air is very dry, a humidifier can help sensitive dogs (especially in winter).
• Anti-stress routine: walks, sniffing games and enough rest. General wellbeing shows in the coat.
• Nutritional support: prioritise a complete, balanced diet and consider essential fatty acids as part of coat care.

How does diet affect your dog's coat?

Hair is made mainly of protein, and the skin acts as a protective barrier. When the diet doesn't provide enough nutrients or quality is low, the body prioritises vital functions and the coat may lose shine, become more fragile or shed more.

• Quality protein: helps maintain stronger, more even hair growth.
• Healthy fats: support the skin and the softness of the coat.
• Micronutrients: vitamins and minerals are involved in maintaining the skin and the hair cycle.
• Regularity: sudden food changes can show in the skin and digestion; if you switch, do it gradually.

If your dog has a dull coat, dandruff or persistent shedding, reviewing the diet is one of the most worthwhile actions in the medium term.

Does omega 3 help with shedding?

Omega 3 fatty acids are known for their role in maintaining skin and coat. In dogs, they're often used as nutritional support for a shinier, less dry coat with a better overall look, especially during shedding season or in dry environments. We go deeper in salmon oil for dog skin and coat.

A practical way to provide omega 3 is a quality fish oil. If you're looking for a specific option, see Maikai Cold-Pressed Salmon Oil, with 13–16% omega 3 and designed to complement the daily diet.

• How to add it: mix it into food to improve acceptance.
• Consistency: the coat usually takes several weeks to reflect changes.
• Quality and storage: choose well-preserved oils and keep them in suitable conditions to protect their freshness.

If your dog already eats a complete food, omega 3 is a complement, not a substitute for a suitable diet.

When should you worry about dog hair loss?

Although hair loss is often normal, some signs mean it's worth seeing a vet to rule out underlying problems and get the right advice. Watch both the skin and your dog's behaviour.

• Bald patches or very localised areas (especially if they're growing).
• Intense itching, constant scratching or compulsive licking.
• Red skin with scabs, wounds, a bad smell or discharge.
• Heavy dandruff or very greasy skin that has appeared recently.
• General changes: lethargy, weight loss, unusual thirst or changes in appetite.
• Puppies or seniors with marked hair loss: best to get them checked soon.

As a practical rule, if hair loss lasts more than 4–6 weeks without improving despite adjusting brushing, hygiene and diet, or if any of the signs above appear, a check-up is recommended.

If hair loss comes with itching or redness, also see our guides on why your dog keeps scratching and dermatitis in dogs.

Dog hair loss: frequently asked questions

Is it normal for a dog to lose hair all year round?

It can be, especially in dogs living indoors at a stable temperature. Even so, if you notice a sudden increase or changes in the skin (dandruff, redness, a bad smell), review hygiene and brushing and see your vet if it persists.

How can I tell shedding from abnormal hair loss?

Shedding is usually all over, without bald patches, and the skin looks healthy. Abnormal hair loss usually comes with itching, irritation, brittle hair, localised thin areas or discomfort when touched.

How often should I brush to reduce dog hair loss?

During shedding, daily or almost daily brushing is ideal; the rest of the year, 2–4 times a week depending on coat type. What matters is using a suitable brush so you don't break the hair or irritate the skin.

Does omega 3 help a dog's coat?

As nutritional support, omega 3 is often used to keep skin and coat in good condition, especially with dryness or a dull coat. Consistency and oil quality are key, and it should be part of an all-round care routine.

When should I take my dog to the vet for hair loss?

If there are bald patches, intense itching, wounds, scabs, a bad smell, or if hair loss comes with changes in general condition (energy, weight, appetite). Also if it doesn't improve after several weeks of basic care and a stable routine.

To care for your dog's coat from the inside and out with one simple routine, take a look at the Maikai Skin and Coat Routine.