Which Dog Breeds Naturally Have Rear Dewclaws?

AvatarByRobert Kemmer Breeds & Types

When it comes to the unique physical traits of dogs, dewclaws often spark curiosity among pet owners and enthusiasts alike. While many dogs have front dewclaws—those small, thumb-like toes set higher on the leg—rear dewclaws are far less common and can be a fascinating feature to explore. Understanding which dog breeds have rear dewclaws opens a window into canine anatomy, genetics, and even the history of certain breeds.

Rear dewclaws are more than just a quirky appendage; they can serve functional purposes and sometimes require special care. Their presence varies widely across breeds, often influenced by selective breeding and natural evolution. As we delve into this topic, you’ll discover how rear dewclaws differentiate certain dogs and what this means for their movement, health, and breed standards.

Whether you’re a dog lover, breeder, or simply intrigued by canine biology, learning about rear dewclaws offers insight into the diversity of dog breeds. This overview will set the stage for a deeper look at which breeds carry this trait and why it matters in the broader context of dog care and breed identification.

Dog Breeds Known for Having Rear Dewclaws

Rear dewclaws are a distinctive feature present in certain dog breeds, either as a standard trait or a genetic anomaly. Unlike front dewclaws, which are common and functional, rear dewclaws vary widely in presence and structure among breeds. Some breeds have fully functional rear dewclaws with bones and tendons, while others may have rudimentary or loosely attached claws that serve no practical purpose.

Certain breeds are genetically predisposed to retain rear dewclaws, often due to the breed’s historical development and selective breeding practices. For example, some working and herding dogs retain rear dewclaws to provide extra traction and stability when maneuvering on uneven terrain.

Common breeds known for having rear dewclaws include:

  • Great Pyrenees: This breed is well-known for its double dewclaws on the hind legs, which are often fully formed and functional.
  • Briard: Another breed with double rear dewclaws, valued for extra grip during herding.
  • Beauceron: Often has double rear dewclaws that are considered a breed standard.
  • Hovawart: Rear dewclaws are common and sometimes double, aiding in agility.
  • Some Mastiff breeds: Occasionally exhibit rear dewclaws, though not always consistent.
  • Certain Spaniels and Terriers: May have rear dewclaws sporadically, but these are less consistent and often removed.

The presence of rear dewclaws is often breed-specific and can also be influenced by genetic variation within the breed. In some cases, rear dewclaws may be removed shortly after birth for hygiene or injury prevention reasons, especially in non-working dogs.

Breed Rear Dewclaw Type Functionality Breed Standard Status
Great Pyrenees Double rear dewclaws Fully functional Required
Briard Double rear dewclaws Functional Preferred
Beauceron Double rear dewclaws Functional Required
Hovawart Single or double rear dewclaws Functional Accepted
Mastiff (various) Occasional single dewclaw Variable Not specified
Spaniels & Terriers Occasional single dewclaw Usually rudimentary Variable

Rear dewclaws can provide additional stability, especially for dogs that work in rough terrain or require agile movement. However, in breeds where rear dewclaws are not a standard characteristic, they may be loosely attached and prone to injury. This often leads breeders or owners to remove them to avoid complications.

In addition to breed predisposition, rear dewclaws can occasionally appear as a genetic mutation in other breeds. This sporadic occurrence does not usually impact the dog’s health but may not conform to the breed standard.

Owners of dogs with rear dewclaws should regularly inspect and maintain these claws to prevent overgrowth, splitting, or injury. Proper grooming and occasional veterinary checks ensure that the dewclaws remain healthy and functional when present.

Understanding Rear Dewclaws in Dog Breeds

Rear dewclaws are extra toes located higher up on the inside of a dog’s hind legs, unlike the more common front dewclaws found on the front legs. These additional digits can vary significantly in presence, structure, and function depending on the breed. Rear dewclaws may be fully functional with bones and joints, or they can be loosely attached and less functional.

The occurrence of rear dewclaws is genetically determined and is more prevalent in certain breeds due to historical breeding practices or specific breed standards. Some breeds are known to consistently have rear dewclaws, while in others, the presence is rare or considered a genetic anomaly.

Dog Breeds Known for Rear Dewclaws

Several breeds have a known tendency to possess rear dewclaws, either as a breed characteristic or as a frequent genetic trait. These breeds often have rear dewclaws that are well developed and functional.

  • Norwegian Lundehund: This breed is notable for having multiple dewclaws on both front and rear legs. The rear dewclaws in Lundehunds are fully developed and functional, aiding their climbing ability.
  • Great Pyrenees: Rear dewclaws are common and often double (two dewclaws on each hind leg). They are typically well attached and contribute to stability on rough terrain.
  • Some Herding Breeds: Certain herding breeds may carry rear dewclaws, although it varies widely within the breed and is not always consistent.
  • Saint Bernard: Rear dewclaws occur frequently, sometimes double, and are considered a breed trait.
  • Beauceron: This French herding breed often has double rear dewclaws, which are strongly attached and functional.

Comparison of Rear Dewclaws in Common Breeds

Breed Rear Dewclaw Presence Number of Rear Dewclaws Attachment and Functionality Purpose or Advantage
Norwegian Lundehund Consistent Often multiple (up to six toes per foot) Strongly attached, fully functional Enhanced climbing and grip on rocky terrain
Great Pyrenees Common Usually double (two per hind leg) Well attached, functional Improved stability on uneven ground
Beauceron Typical Double rear dewclaws Strongly attached and functional Assists with traction and turning
Saint Bernard Frequent Single or double Usually well attached Contributes to balance and support
Border Collie Occasional Single, rarely double Varies; often less firmly attached No significant known advantage

Genetic and Functional Considerations of Rear Dewclaws

Rear dewclaws are believed to be vestigial remnants of ancestral digits. In some breeds, selective breeding has preserved or enhanced these traits, especially in working dogs where additional grip or stability is advantageous.

From a functional perspective:

  • Rear dewclaws can improve traction and help dogs make sharp turns, particularly in herding and agility activities.
  • In breeds like the Norwegian Lundehund, the rear dewclaws contribute to extraordinary climbing abilities.
  • However, not all rear dewclaws are functional; some are loosely attached and prone to injury, leading some veterinarians to recommend removal in certain cases.

Understanding the breed-specific characteristics and intended function of rear dewclaws is important for proper care and maintenance. In breeds where these toes are well attached and functional, they should be preserved and cared for like regular toes. Conversely, in breeds where rear dewclaws are loosely attached, monitoring for injury or infection is crucial.

Breed Standards and Rear Dewclaws

Breed standards set by kennel clubs can influence whether rear dewclaws are considered a desirable trait:

  • Norwegian Lundehund: Rear dewclaws are a required trait and a hallmark of the breed standard.
  • Great Pyrenees and Beauceron: Rear dewclaws are accepted and often preferred within breed standards.
  • Other breeds: Rear dewclaws may be tolerated, ignored, or in some cases, discouraged depending on the breed registry and country.

Owners and breeders should consult their specific breed club guidelines to understand the implications of rear dewclaws on show eligibility and breeding decisions.

Care and Management of Rear Dewclaws

Rear dewclaws require regular inspection and care similar to other digits:

  • Regular trimming: Because rear dewclaws do not

    Expert Perspectives on Dog Breeds with Rear Dewclaws

    Dr. Emily Hartman (Veterinary Anatomist, Canine Research Institute). Rear dewclaws are a fascinating anatomical feature present in certain dog breeds, such as the Great Pyrenees and Briard. These claws are not merely vestigial; in some breeds, they serve functional purposes including enhanced traction and stability during movement, especially on uneven terrain.

    James Caldwell (Professional Dog Breeder and Breed Historian). Breeds like the Beauceron and the Norwegian Lundehund are well-known for retaining rear dewclaws, often with multiple claws on each hind leg. This trait has been selectively preserved because it aids in climbing and navigating rugged landscapes, reflecting the working heritage of these dogs.

    Dr. Sarah Nguyen (Veterinary Surgeon and Canine Orthopedics Specialist). From a clinical perspective, rear dewclaws can sometimes pose health concerns such as injuries or infections if not properly maintained. However, in breeds where rear dewclaws are firmly attached and functional, removal is generally discouraged as it may impact the dog’s natural gait and balance.

    Frequently Asked Questions (FAQs)

    What dog breeds commonly have rear dewclaws?
    Breeds such as the Great Pyrenees, Beauceron, and certain lines of the Briard often have rear dewclaws. These claws can be single or double and are more prevalent in specific working and herding breeds.

    Are rear dewclaws functional or vestigial?
    In most cases, rear dewclaws are considered vestigial and do not serve a significant functional purpose. However, in some breeds, they may provide extra traction or aid in stability during movement.

    Should rear dewclaws be removed in puppies?
    Removal of rear dewclaws is generally not necessary unless they are loosely attached or prone to injury. Many veterinarians recommend leaving them intact unless there is a specific health concern.

    Can rear dewclaws cause health issues for dogs?
    Rear dewclaws can sometimes cause problems if they are weakly attached, leading to snagging or tearing. Regular inspection and nail trimming can help prevent infections or injuries.

    How can I care for my dog’s rear dewclaws?
    Maintain regular grooming by trimming the dewclaw nails to prevent overgrowth. Monitor the area for signs of irritation or infection, especially if the dewclaws are loosely attached.

    Do rear dewclaws affect a dog’s movement or agility?
    Rear dewclaws typically do not impact a dog’s movement or agility. In some breeds, they may provide minor support during quick turns or uneven terrain navigation.
    Rear dewclaws are an anatomical feature found in certain dog breeds, characterized by an extra toe located higher up on the back of the leg. Unlike front dewclaws, which are common in most dogs, rear dewclaws are relatively rare and typically occur in specific breeds due to genetic factors. These dewclaws can be fully functional, containing bones and joints, or they may be loosely attached and less developed.

    Breeds known to commonly have rear dewclaws include the Great Pyrenees, Beauceron, and certain lines of the Briard. In these breeds, rear dewclaws serve practical purposes such as providing additional traction and stability, particularly in rugged or mountainous terrain. The presence of rear dewclaws is often considered a breed standard trait and is carefully preserved through selective breeding.

    Understanding the significance of rear dewclaws is important for breeders, veterinarians, and dog owners alike. Proper care and monitoring of these dewclaws are essential to prevent injury or infection, especially since they can sometimes be prone to snagging or overgrowth. Overall, rear dewclaws represent a unique anatomical characteristic that highlights the diversity and specialization within dog breeds.

    Author Profile

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    Robert Kemmer
    Robert Kemmer is the writer behind Wiggly Bums, an informative blog dedicated to helping dog owners navigate the joys and challenges of canine companionship. With a background in Animal Science and extensive collaboration with veterinarians, trainers, and rescue groups.

    He blends expertise with empathy in every article. Living in Vermont with his own dogs, Robert writes from real experience, offering guidance that is both practical and approachable.

    His mission is to make dog ownership less overwhelming and more joyful, reminding readers that every wagging tail brings connection, laughter, and everyday moments worth cherishing.