Do Dogs Have Dew Claws on Their Back Legs?
Yes, many dogs do have dew claws on their back legs, though presence and structure vary by breed. These rear dew claws are typically higher on the inner leg than front dew claws and may be only a stub or a fully formed digit with bone. Not all dogs have noticeable back dew claws, and some appear only as a toenail without a connected bone or tendon. Understanding what rear dew claws are helps explain why they are sometimes removed, kept, or simply absent.
What Are Rear Dew Claws?
A dew claw is a digit located higher on the leg than the main foot pads, analogous to a thumb or big toe in humans. On the front legs, dew claws are often more developed; on the back legs, they tend to be smaller and less functional. In dogs with rear dew claws, you may see:
- Small nail and soft skin only (non-osseous)
- A nail with a short bone extension (osseous but loosely connected)
- A fully formed, mobile or partially mobile digit with bone, muscle, and tendon
Ossified rear dew claws are more clearly a true digit, while soft-tissue versions are basically extra nails without the supporting structures found in the main toes.
How Common Are Back Dew Claws in Dogs?
Rear dew claws are present in a subset of dogs and vary widely by breed and individual genetics. In some breeds they are standard; in others they are rare or virtually absent. The trait is inherited and not linked to overall health or soundness.
Typical Patterns by Category
| Category | Rear Dew Claw Presence | Notes |
|---|---|---|
| Double Dew Claw Breeds | Common and expected | Great Pyrenees, Anatolian Shepherd, Briard often have two or more digits on the back legs. |
| Many Sporting and Terrier Breeds | Present in some individuals | Variable; may be ossified or soft tissue. |
| Sighthounds and Scent Hounds | Usually absent or minimal | Rear dew claws are uncommon in Greyhounds, Beagles, and similar breeds. |
| Small Companion Breeds | Variable | Poodles, Shih Tzus, and others may have them in any combination. |
Function and Practical Role
In dogs that have well-developed rear dew claws, especially those with double dew claws, these digits can help with grip, stability on uneven terrain, and balance during turns. However, most rear dew claws do not make direct contact with the ground and provide limited functional benefit compared with front dew claws, which assist with traction and digging.
Comparative Function
- Front dew claws: Often weight-bearing, aid in traction and climbing.
- Rear dew claws: Usually minimal weight-bearing; may assist in grip for active working dogs with double or ossified digits.
Removal Practices and Timing
Rear dew claws are sometimes removed for practical or safety reasons. Removal decisions depend on whether the digit is ossified, how closely it contacts the leg, and the risk of injury. Typical considerations include:
- Loose or poorly attached digits may catch on bedding, clothing, or fencing and tear, leading to pain and infection.
- Ossified dew claws that contact the leg can twist or fracture, which is painful and may require amputation.
- In working or performance dogs, some breeders and veterinarians remove problematic rear dew claws early to prevent injury.
If removal is recommended, it is commonly performed between a few days old and around 3 to 5 months of age, depending on the veterinarian’s approach and the puppy’s health. The procedure may be done with local anesthetic or under general anesthetic, and recovery is usually quick when managed appropriately.
Veterinary and Breeding Perspectives
Veterinary opinions on rear dew claws vary by region and specialty. Some veterinarians routinely remove loose or non-functional digits to prevent future problems; others recommend leaving well-attached, asymptomatic dew claws alone. Breed standards in some working and livestock-guarding breeds expect double rear dew claws, while conformation judges in other breeds may treat them as a fault if they are loose or cause gait issues.
Responsible breeders may choose to remove problematic rear dew claws in puppies or leave them when they are structurally sound and unlikely to cause injury. Potential owners should ask breeders about rear dew claw type and any history of irritation or removal.
Care and Monitoring
Whether kept or monitored, rear dew claws require basic nail care. Because they are located on the inner leg, they can contact the ground less often and may not wear down naturally, increasing the risk of overgrowth or splitting.
Care tips include:
- Trim nails regularly, including dew claws, using proper dog nail clippers or grinders.
- Check for redness, swelling, or tenderness around the dew claw area during grooming.
- Monitor after exercise for limping or licking, which may indicate discomfort or injury.
Routine checks help ensure that even minor dew claws remain healthy and do not develop painful conditions.