What Causes Hair Loss in Dogs​?

By PetMade Mar 3, 2025 Medically reviewed by 23 min read
What Causes Hair Loss in Dogs​?
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Reviewed & Fact-Checked by Our Experts

What causes hair loss in dogs? As a loving pet parent, discovering patches of thinning fur or noticing more hair than usual on your furniture can trigger immediate concern. While seasonal shedding is a natural part of your furry friend’s life cycle, unexpected hair loss might signal that your pup needs extra attention and care.

This guide will help you understand the various factors that can affect your dog’s beautiful coat, from nutritional considerations to environmental influences. We’ll explore practical ways to support your dog’s coat health and maintain that gorgeous fur they were born with. Whether you’re dealing with excessive shedding or just want to keep your four-legged companion’s coat in top condition, you’ll find actionable tips and insights to help your pup stay happy and comfortable.

Key Takeaways

  • Regular shedding is natural, but patchy or sudden hair loss often signals the need for adjustments in diet or care routine.
  • Proper nutrition and gentle grooming habits play essential roles in maintaining healthy coat condition.
  • Changes in environment and stress levels can impact coat health – maintaining a comfortable space supports fur quality.

Natural vs. Concerning Hair Loss

Understanding the reasons for hair loss in dogs starts with recognizing what’s normal and what might need attention. Most dogs naturally shed their coat once or twice a year, with double-coated breeds like Huskies and German Shepherds experiencing more dramatic seasonal changes. Single-coated breeds such as Poodles and Yorkshire Terriers tend to shed less but require regular grooming to maintain coat health.

While finding dog hair on your clothes and furniture is perfectly normal, certain signs suggest your pup’s shedding might be unusual:

  • Patchy or uneven fur loss, especially if it appears in specific areas rather than all over
  • Dry, brittle fur that breaks easily when touched or brushed
  • Excessive scratching or rubbing against furniture, accompanied by visible changes in coat texture
  • Thinning fur that doesn’t regrow after several weeks

Common Causes of Hair Loss in Dogs

Dog shedding fur with loose hair on the floor

Understanding what causes hair loss in dogs is key to maintaining a strong, healthy coat. While some shedding is natural, learning to recognize when fur loss is excessive can help you address potential issues early. Factors such as nutrition, environment, grooming habits, and stress all play a role in coat health. 

Nutritional Factors & Deficiencies

A well-balanced diet is essential for a thick, shiny coat. Wondering what vitamin deficiency causes hair loss in dogs? A lack of key nutrients – such as omega-3 fatty acids, protein, vitamin E, and biotin – can lead to dull fur, brittle texture, and excessive shedding.

  • Omega-3 fatty acids deficiency may result in a dull, brittle coat that sheds excessively
  • Low protein intake can affect the natural cycle of hair growth and replacement
  • Insufficient vitamin E and biotin levels might impact the coat’s natural shine and strength

Proper hydration plays a crucial role too – when dogs don’t drink enough water, it can affect their coat’s natural moisture balance and overall appearance.

Environmental & External Factors

Causes of dog hair loss often stem from the environment your pet lives in. Consider these external influences:

  • Dramatic temperature changes between indoor and outdoor environments can trigger excessive shedding
  • Dry air, particularly during winter months, may lead to skin dryness and increased hair loss
  • Certain household products, including some cleaning solutions, might affect coat health
  • Environmental allergens can cause discomfort that leads to excessive scratching

Grooming & Coat Maintenance Issues

Signs of unhealthy dog coat often emerge from improper grooming practices:

  • Using brushes not suited for your dog’s specific coat type can cause breakage
  • Over-bathing can strip natural oils that protect the coat and skin
  • Skipping regular brushing sessions allows dead hair to mat and tangle, leading to more severe shedding later

Stress & Behavioral Triggers

Understanding why dogs lick their paws and other stress signals is crucial. Common stress that triggers canine hair loss causes include:

  • Changes in routine or environment that increase nervous behaviors
  • Separation anxiety leading to excessive self-grooming
  • Lack of mental stimulation resulting in destructive grooming habits
  • New pets or family members causing temporary stress-related shedding

Understanding these various factors helps create a foundation for maintaining healthy coat condition through proper care and attention to your dog’s overall well-being.

How to Support a Dog’s Coat & Prevent Hair Loss

Corgi dog being brushed with a slicker brush while resting on owner's lap

A healthy, vibrant coat requires a holistic approach that combines proper nutrition, consistent grooming, and environmental care. By focusing on these key areas, you can help maintain your dog’s coat health and minimize excessive shedding. 

Best Diet & Supplements

Wondering can dogs have fish oil? Absolutely! Fish oil supplements rich in omega-3 fatty acids can support coat health when added to a balanced diet. However, natural food sources offer excellent alternatives. Cold-water fish like sardines and salmon provide essential nutrients that help maintain coat strength and shine.

A healthy coat starts with proper nutrition:

  • High-quality protein sources help build strong fur from the inside out
  • Omega-3 rich foods support natural oil production that keeps the coat moisturized and lustrous
  • Foods containing zinc and B-vitamins contribute to overall coat health and natural shedding cycles

When considering supplements, look for options that contain:

  • Fish oil (EPA & DHA) for coat strength and shine
  • Biotin to support healthy fur growth
  • Vitamin E to maintain natural moisture balance
  • Zinc to support overall coat condition
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Omega 3+ Formula

Healthy fur starts from within. PetMade’s Omega 3+ Formula enriches your pet’s daily nutrition with Wild Alaska Pollock Oil, Vitamin E, and Biotin, helping maintain a healthy, lustrous coat. This premium blend delivers targeted nourishment for skin and coat wellness, making it a simple addition to your pet’s healthy lifestyle.
Care for My Dog’s Skin

Grooming Tips to Reduce Hair Loss

Establish a consistent grooming routine that works for your dog’s specific coat type. Regular, gentle brushing helps distribute natural oils throughout the fur while removing loose hair before it ends up on your furniture.

For optimal coat care:

  • Use a moisturizing shampoo specifically formulated for dogs
  • Avoid over-bathing, which can strip natural oils
  • Consider leave-in conditioners for extra moisture protection
  • Brush in the direction of hair growth to prevent breakage

Seasonal & Environmental Coat Care

Adapt your care routine to changing weather conditions:

  • During winter months, maintain indoor humidity levels between 30-50%
  • Provide fresh water throughout the day to support hydration
  • Create a comfortable indoor environment during extreme weather
  • Use protective gear (like dog sweaters) in harsh weather conditions to minimize stress on the coat

Increase brushing frequency during seasonal changes when shedding typically intensifies. This helps manage loose fur while monitoring coat condition.

When to Be Concerned About Dog’s Hair Loss?

While various causes of hair loss in dogs are manageable with proper care, certain signs warrant extra attention. Watch for sudden changes in your dog’s coat condition, especially if you notice:

  • Patchy or uneven fur loss that doesn’t follow typical shedding patterns
  • Brittle, dry fur accompanied by flaking or roughness
  • Changes in your pet’s behavior, such as increased scratching or reluctance to be touched
  • Excessive licking or rubbing against furniture more than usual

Trust your instincts – if you notice multiple changes in your dog’s coat or behavior occurring together, it’s worth taking a closer look at their daily routine and environment to identify potential triggers.

Conclusion

Understanding what causes hair loss in dogs helps you provide the best care for your furry friend. While some shedding is natural, maintaining a balanced diet, consistent grooming routine, and comfortable environment can support optimal coat health. By staying attentive to changes in your dog’s fur and behavior, you can take proactive steps to keep their coat healthy, strong, and beautiful for years to come.

Why is my dog losing hair but not itching? 

Hair loss without itching can occur due to nutritional imbalances, stress-related behaviors, or environmental factors. When dogs shed their coat naturally or experience hormonal changes, they may lose fur without showing signs of discomfort.

Can poor nutrition cause hair loss in dogs? 

Yes, inadequate nutrition significantly impacts coat health. Dogs need specific nutrients like omega-3 fatty acids, high-quality proteins, and essential vitamins to maintain healthy fur. A lack of these nutrients can lead to excessive shedding.

Does seasonal shedding cause bald patches? 

No, seasonal shedding typically results in overall thinning but not bald patches. Natural shedding occurs evenly across the coat. If you notice patchy hair loss, this suggests factors beyond normal seasonal changes.

Are certain breeds more prone to hair loss? 

Double-coated breeds like Huskies and German Shepherds experience more noticeable seasonal shedding. Some short-haired breeds may show thinning more visibly, while breeds like Poodles tend to shed less but require regular grooming.

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