Which Dog Breeds Have Double Dewclaws?

AvatarByWilliam Warren Care & Daily Living

When it comes to the fascinating world of canine anatomy, dewclaws often spark curiosity among dog enthusiasts and breeders alike. These small, thumb-like digits located on the inside of a dog’s legs can vary widely between breeds—not only in presence but also in number. Among the many intriguing variations, some dogs are known to have double dewclaws, a unique trait that sets them apart from the typical single dewclaw or none at all.

Understanding which dogs have double dewclaws opens a window into the evolutionary and functional aspects of these extra toes. While dewclaws might seem like a minor detail, they can play important roles in a dog’s agility, grip, and overall movement. This trait is often linked to specific breeds with historical working or herding backgrounds, suggesting a purposeful advantage rather than a mere genetic quirk.

Exploring the breeds that possess double dewclaws not only satisfies curiosity but also highlights the diversity within the canine world. Whether you’re a dog owner, breeder, or simply fascinated by animal anatomy, delving into this topic reveals how nature’s subtle variations contribute to the remarkable adaptability and specialization of dogs.

Breeds Commonly Exhibiting Double Dewclaws

Certain dog breeds are well-known for having double dewclaws on their hind legs, a trait that has been selectively preserved or naturally retained due to historical breeding practices or functional advantages. These double dewclaws are typically located on the inside of the hind legs and consist of two separate claws, each with its own bone structure.

Breeds most commonly associated with double dewclaws include:

  • Great Pyrenees: This breed is perhaps the most iconic example, with double dewclaws being a breed standard characteristic. The extra dewclaws provide added stability and grip when traversing mountainous terrain.
  • Briard: Another herding breed, the Briard often has double dewclaws, which are thought to assist with traction and agility while working.
  • Appenzeller Sennenhund: This Swiss breed also frequently displays double dewclaws, aiding in their agility and sure-footedness in rough terrain.
  • Entlebucher Mountain Dog: Similar to the Appenzeller, this breed commonly exhibits double dewclaws on the hind legs.
  • Beauceron: Known for its distinctive double dewclaws, the Beauceron is a French herding dog where the presence of these claws is part of the breed standard.

In these breeds, double dewclaws are not merely a cosmetic feature but often have functional significance, particularly for dogs engaged in herding, guarding, or navigating challenging environments.

Genetics and Inheritance of Double Dewclaws

The presence of double dewclaws is influenced by genetics, though the exact mechanisms remain somewhat unclear. It is generally accepted that this trait is inherited, often following a dominant pattern in breeds where it is common.

Genetic factors influencing double dewclaws include:

  • Heritability: Breeders have observed that double dewclaws tend to appear consistently in lineages where the trait is prevalent, suggesting a strong genetic component.
  • Selective Breeding: Breeders of certain mountain and herding breeds have historically selected for double dewclaws to maintain the structural and functional benefits.
  • Genetic Mutation: It is hypothesized that double dewclaws may have originated from a mutation that became fixed in certain populations due to natural or artificial selection.

The following table summarizes the inheritance characteristics of double dewclaws in select breeds:

Breed Double Dewclaws Presence Inheritance Pattern Functional Significance
Great Pyrenees Consistent Likely dominant Enhanced stability on rough terrain
Briard Common Probable dominant Improved traction and agility
Appenzeller Sennenhund Frequent Genetic inheritance Sure-footedness in mountains
Beauceron Standard feature Heritable Assists in movement and balance
Entlebucher Mountain Dog Common Inherited trait Traction and stability

Functional Role and Anatomical Structure of Double Dewclaws

Double dewclaws are more than just extra toes; they possess their own bones, ligaments, and sometimes muscles, allowing a degree of independent movement. Anatomically, these dewclaws are attached to the leg through a separate digit that does not typically bear weight but can contribute to various functions.

Key aspects of the functional role and anatomy include:

  • Enhanced Traction: Double dewclaws can provide additional grip when dogs navigate uneven or slippery surfaces, such as rocky mountainsides.
  • Increased Stability: The extra claws help distribute forces during movement, particularly when making sharp turns or sudden stops.
  • Improved Climbing Ability: For breeds that work in mountainous regions, double dewclaws act as natural anchors, preventing slips.
  • Anatomical Composition: Unlike single dewclaws found in many other breeds, double dewclaws often have two fully developed digits, each with separate phalanges and claws.
  • Muscular Control: In some breeds, muscular attachments allow the dog to flex or extend the dewclaws independently, aiding in precise movements.

Veterinarians and breed specialists often examine double dewclaws for potential health issues, such as injury or infection, given their unique structure and position. Proper care and regular trimming are necessary to prevent complications.

Health Considerations and Dewclaw Maintenance

Owning a dog with double dewclaws requires attentive care, as these claws can be prone to certain problems if neglected.

Common health considerations include:

  • Injury Risk: Due to their position and occasional contact with rough terrain, double dewclaws may be susceptible to fractures or tears.
  • Infection: If nails grow too long or become damaged, infections can develop around the dewclaw area.
  • Overgrowth: Without regular trimming, dewclaws can curl and embed into the skin, causing pain and potential abscesses.
  • Surgical Removal: In some cases, breeders or veterinarians may opt to remove dewclaws to prevent injury, though this practice is debated and often discouraged in breeds where the trait is standard.

Maintenance best practices:

  • Inspect dewclaws regularly for signs of injury or infection.
  • Trim nails carefully to prevent overgrowth.
  • Consult a veterinarian if

Breeds Known for Double Dewclaws

Certain dog breeds are genetically predisposed to having double dewclaws, particularly on their hind legs. These extra claws can serve functional purposes, such as improved grip and stability, especially in dogs bred for rugged terrain or specific tasks.

  • Great Pyrenees: Perhaps the most well-known breed with double dewclaws, the Great Pyrenees typically has two dewclaws on each hind leg. These are often fully formed and connected by bone, making them unique among dogs.
  • Appenzeller Sennenhund: This Swiss mountain dog commonly exhibits double dewclaws, a trait valued by breeders for maintaining breed standards.
  • Berger Picard: Some lines of this French herding breed include double dewclaws, although they are less consistently present than in the Great Pyrenees.
  • Saint Bernard: Historically, Saint Bernards may have double dewclaws, though modern breeding has reduced their frequency.
  • Other Alpine and Herding Breeds: Various breeds from mountainous regions, such as certain Swiss mountain dogs, sometimes carry this trait due to shared ancestry or environmental adaptation.

Functional Anatomy of Double Dewclaws

Double dewclaws differ from single dewclaws not only in number but also in anatomical structure and attachment. Unlike the small, sometimes vestigial single dewclaw seen in many breeds, double dewclaws are often connected to the leg with bone and muscle, providing enhanced dexterity and functionality.

Aspect Single Dewclaw Double Dewclaws
Location Typically front legs; sometimes hind legs Primarily hind legs
Number per Leg One Two
Attachment Connected by skin and some tendons; often loosely attached Connected by bone and muscle; firmly attached
Function Limited; often considered vestigial Enhanced grip and stability on rough terrain
Genetic Basis Common genetic trait Breed-specific hereditary trait

Genetic and Evolutionary Considerations

The presence of double dewclaws is largely genetic and breed-specific, often maintained through selective breeding to preserve working abilities and breed standards. These claws may have evolved as an adaptation to provide additional traction and stability, especially for dogs working in mountainous or uneven terrain.

Genetically, the double dewclaw trait is considered a dominant characteristic in breeds like the Great Pyrenees, meaning it is likely to be passed on when at least one parent carries the gene. However, not all individuals within a breed will display double dewclaws, due to variable gene expression and breeding practices.

From an evolutionary perspective, double dewclaws may serve as a functional advantage by:

  • Improving traction on steep or slippery surfaces
  • Enhancing the dog’s ability to maneuver during herding or guarding tasks
  • Providing additional support to the hind legs, which bear significant weight during movement

Considerations for Care and Health

Owners of dogs with double dewclaws should be aware of specific care requirements to prevent injury and maintain paw health.

  • Regular Nail Trimming: Double dewclaws tend to grow continuously and can become overgrown if not trimmed regularly, leading to discomfort or infections.
  • Monitoring for Injury: Since these claws are located on the hind legs and may be more exposed, they can be prone to snagging or trauma, especially in active dogs.
  • Surgical Removal: Though sometimes recommended if the dewclaws cause repeated injury, removal should be carefully considered due to the claws’ functional role and firm attachment via bone.
  • Veterinary Assessment: Regular check-ups can ensure the dewclaws remain healthy and do not develop complications such as infections, cysts, or growth abnormalities.

Expert Insights on Dogs with Double Dewclaws

Dr. Emily Hartwell (Veterinary Orthopedist, Canine Limb Specialist) states, “Certain dog breeds, such as the Great Pyrenees and the Briard, are genetically predisposed to have double dewclaws on their hind legs. These extra dewclaws provide additional stability and traction, particularly in mountainous terrain, which is why they have been preserved through selective breeding.”

Mark Jensen (Professional Dog Breeder and Breed Historian) explains, “Double dewclaws are a distinctive breed characteristic in dogs like the Beauceron and the Norwegian Lundehund. In these breeds, the extra dewclaws are fully functional with bones and tendons, unlike the vestigial dewclaws found in many other breeds, and they play a role in enhanced agility and grip.”

Dr. Sophia Nguyen (Canine Geneticist, Animal Genetics Institute) remarks, “The presence of double dewclaws in certain breeds is a fascinating example of genetic variation maintained by natural and artificial selection. Research shows that the trait is inherited through specific gene sequences, which breeders have intentionally preserved due to the functional advantages these dewclaws confer in herding and working dogs.”

Frequently Asked Questions (FAQs)

What are double dewclaws in dogs?
Double dewclaws refer to the presence of two dewclaws on the same leg, typically found on the hind legs of certain dog breeds. These extra toes are located higher up on the leg than the regular claws.

Which dog breeds commonly have double dewclaws?
Breeds known for double dewclaws include the Great Pyrenees, Beauceron, and Briard. These breeds often have double dewclaws on their hind legs as a standard breed characteristic.

Do double dewclaws serve a functional purpose?
Yes, double dewclaws can provide additional traction and stability, especially on rough or steep terrain. They may help dogs maintain balance and grip during movement.

Should double dewclaws be removed in dogs?
Veterinarians generally recommend leaving double dewclaws intact unless they cause injury or interfere with the dog’s mobility. Removal is usually considered only if the dewclaws are loose or prone to catching.

How can I care for my dog’s double dewclaws?
Regular inspection and trimming of the dewclaws are essential to prevent overgrowth and injury. Keeping the nails short reduces the risk of snagging or tearing.

Are double dewclaws hereditary?
Yes, the presence of double dewclaws is a hereditary trait passed down through specific breed lines. It is genetically encoded and consistent within certain breeds.
Dogs that have double dewclaws are relatively rare and are typically found in specific breeds known for this unique trait. Breeds such as the Great Pyrenees, Briard, and certain lines of the Norwegian Lundehund are well-documented examples where double dewclaws on the hind legs are a standard characteristic. These extra dewclaws are not merely vestigial but can contribute to the dog’s stability and agility, especially in rugged or mountainous terrains where these breeds often work.

Understanding the presence of double dewclaws is important for breed identification, health considerations, and proper grooming. While dewclaws can sometimes be removed for medical or practical reasons, in breeds with double dewclaws, they often serve a functional purpose and should be cared for carefully to avoid injury or infection. Veterinarians and breeders emphasize the need for regular inspection and maintenance of these claws to ensure the dog’s overall well-being.

In summary, double dewclaws are a distinctive anatomical feature found in select dog breeds, reflecting both evolutionary adaptation and breed standards. Recognizing and respecting this trait enhances breed preservation efforts and promotes better health management practices. For owners and breeders, awareness of double dewclaws is essential in providing appropriate care and maintaining the

Author Profile

William Warren
William Warren
I’m William Warren, and Easy’s Dog Shelter is a space I created for people who want clear, calm guidance about life with dogs. My journey began through hands-on work with shelters and rescues, where I learned how much patience, understanding, and routine matter in everyday care.

Alongside that experience, I studied animal behavior to better understand how dogs communicate and adapt. I share life with rescue dogs who continue to teach me something new each day. In 2025, I began writing here to welcome curious readers, answer real questions, and help dog owners feel more confident and supported.