Hair loss in dogs: Causes, Solutions and Advice

Hair loss in dogs can be harmless, such as natural shedding, but it can also indicate health problems such as skin infections, hormonal imbalances, allergies, parasites and deficiencies in nutrition. Some conditions require a visit to the vet, whilst others can be resolved with the right care and nutrition. In this article, we discuss the possible causes of hair loss in dogs, the best treatments and practical advice to prevent and minimise coat problems.

What are the most common causes of hair loss in dogs?

Hair loss in dogs can have various causes, ranging from external factors such as parasites to internal conditions such as hormonal imbalance. Here are the most common causes:

1. Hormonal disorders

Hormonal abnormalities can affect the hair growth cycle and lead to excessive hair loss.

• Hypothyroidism: Sluggish thyroid production results in a thin, brittle coat and sometimes bald patches.
• Cushing’s disease: Overproduction of cortisol causes hair loss, thinning skin and abdominal enlargement.
• Diabetes and sex hormones: Hormonal imbalance can contribute to hair loss.

2. Parasites and infections

Parasites and infections cause itching, leading dogs to scratch and lick themselves excessively. This results in hair loss and skin irritation.

• Fleas, ticks and mites cause itching and allergic reactions.
• Fungal and bacterial infections result in red, irritated skin and bald patches.
• Demodicosis (a mite infection) can cause bald patches and inflammation.

3. Allergies and food intolerance

Allergies and hypersensitivity reactions can indirectly cause hair loss through excessive licking and scratching.

• Food allergies to chicken, beef or grains
• Environmental allergies to pollen, house dust mites or cleaning products
• Contact allergies to chemicals such as shampoos

4. Stress and behavioural problems

Dogs may lick or bite their coat excessively due to anxiety, boredom or stress. Stress can be caused by:

• Changes in living environment or family structure
• Lack of mental or physical stimulation
• Prolonged boredom or lack of exercise

5. Nutritional problems and deficiencies

An unbalanced diet can cause coat problems and dry skin. Deficiencies in certain nutrients affect the coat:

• Biotin and B vitamins: Important for healthy hair growth
• Omega-3 and omega-6 fatty acids: Essential for healthy skin and a shiny coat
• Zinc and copper: Help prevent hair loss caused by deficiencies

6. Age and breed-specific factors

• Older dogs are more likely to lose hair due to slower hair growth and underlying health issues.
• Breed susceptibility: Labradors, Huskies and Terriers are more prone to skin problems and seasonal hair loss.

How can you treat and prevent hair loss in dogs?

1. Improving nutrition and supplements

Nutrition has a direct impact on coat health. High-quality nutrition prevents hair loss and stimulates hair growth. Choose nutrition containing:

• High-quality proteins (chicken, salmon, beef)
• Essential fatty acids (salmon oil, linseed oil)
• Biotin and B vitamins

Supplements that help:

• Salmon oil or fish oil helps with dry skin and coat loss.
• Biotin supplements improve coat texture.

2. Regular coat care

Brushing

• Short-haired dogs: 1–2 times a week
• Long-haired dogs: Brush every other day to reduce tangles and hair loss.

Use of appropriate grooming products

• Hypoallergenic and moisturising shampoos soothe the skin.
• Medicated shampoos help combat fungal and bacterial infections.

3. Parasite control

• Monthly anti-flea and tick prevention reduces skin problems caused by parasites.
• Regular checks for mites and fleas prevent irritation.

4. Stress reduction and behavioural enrichment

• Play interactively with your dog and provide them with enriching toys.
• Create a safe environment free from stressors.
• Use calming supplements such as valerian or CBD oil if necessary.

5. Veterinary advice for underlying problems

In cases of extreme or prolonged hair loss, it is necessary to consult a veterinarian. Warning signs that a veterinarian visit is needed:

• Bald patches with no new hair growth
• Scaly, irritated or bloody skin
• Excessive licking or biting of a specific area
• Hair loss combined with weight loss or behavioural changes

Frequently asked questions about hair loss in dogs

Is hair loss in dogs normal?

Yes, dogs shed hair during moulting seasons (spring and autumn). However, excessive hair loss may indicate a health issue.

Which dog breeds shed the most?

Breeds such as the Labrador Retriever, Husky, German Shepherd and Golden Retriever shed all year round.

Does hypoallergenic nutrition help with hair loss?

Yes, hypoallergenic nutrition is particularly helpful for dogs with food allergies or sensitivities that cause hair loss.

What is the best supplement for hair loss in dogs?

• Salmon oil/fish oil for a healthy coat
• Biotin and zinc for coat regeneration
• Omega-3 and Omega-6 fatty acids for a shiny coat

How quickly does a dog’s coat grow back after hair loss?

Depending on the cause, the coat can fully recover within 4 to 12 weeks. Hormonal problems or severe deficiencies can slow down hair growth.

Conclusion

Hair loss in dogs can be caused by hormonal factors, allergies, parasites, nutritional deficiencies or stress. A healthy diet, regular brushing and preventative care can prevent many cases. Severe hair loss with accompanying symptoms requires a visit to the vet. By taking the right measures and providing proper care, your dog’s coat will remain healthy and strong.