THE QUICK ANSWER
They carry documented hazards of their own: burns and cuts from thin cord, injury to a dog that hits the end of the line at speed, and recoil when a clasp breaks at full extension. No US injury dataset separates retractable leashes from other leashes, but leash injuries as a whole are common and rising: an estimated 356,746 people were treated in US emergency departments for them between 2001 and 2018.
THE NUMBERS
- 356,746
- estimated US emergency-department visits for dog leash-related injuries, all leash types, 2001–2018. Forrester, Am J Emerg Med 2020
- 25.4 → 105.5
- leash injuries per million US residents, in 2001 and in 2018. Forrester, Am J Emerg Med 2020
- 26.8%
- of those injuries were fractures, the most common diagnosis. Forrester, Am J Emerg Med 2020
- 223,000
- retractable leashes recalled in 2008 because the metal clasp could bend or break and the leash recoil. CPSC recall, 2008
What the injury numbers show, and what they do not
US emergency-department injuries are sampled through the National Electronic Injury Surveillance System, which does not record leash type. A 2020 analysis estimated 356,746 leash-related injuries treated in US emergency departments from 2001 to 2018, with the rate rising from 25.4 to 105.5 per million people. Most came from being pulled (193,483) or tripping and tangling (136,767); 88.2% of patients were adults and 73.0% were women. A 2023 study of adults walking dogs estimated 422,659 visits from 2001 to 2020, with annual numbers rising more than fourfold. None of these figures isolates retractable leashes, and a claim that they do is not supported.
The hazards that come from the design
The American Kennel Club warns that a dog hitting the end of a fully extended leash at speed can suffer injuries such as a damaged trachea or spine, and that in crowded places the line can wrap around someone’s legs. It advises a tape leash rather than a cord, because thin cord can more easily burn or cut as it pulls across skin. It recommends against retractable leashes in pet stores and veterinary offices, in crowds, around other dogs and on sidewalks.
Recoil: when hardware fails at full extension
A line under tension turns a broken part into a projectile. In September 2008 the US Consumer Product Safety Commission announced the recall of about 223,000 retractable leashes because the metal clasp connecting the leash to the collar could bend or break and the leash recoil unexpectedly. Five injuries were reported: facial cuts, a broken tooth, a displaced eye lens and a bruised collarbone.
Who gets hurt, and how
Fractures were the most common diagnosis in the 2020 analysis (26.8%), followed by sprains and strains (26.0%) and contusions or abrasions (17.7%). A review of 443 patients seen by hand surgeons found that 75.9% were hurt when a hand or finger caught in the leash as it was pulled, and 21.6% needed surgery. Leash type was not recorded, but the lesson applies to every leash: never wrap it around a hand or finger.
What a retractable leash specification should cover
State a maximum dog weight, and test the brake and lock under a sudden load at that rating. Test the clip, swivel and line attachment well above the rated load, since clasp failure caused the 2008 recall. Prefer flat tape to thin cord, in a high-visibility or reflective material. Print warnings against wrapping the line around fingers and against use near roads, in crowds or with strong pullers. Never present all-leash injury totals as retractable-specific, and avoid words such as “safe” or “injury-free”.
A useful comparison
| Hazard | Evidence | Specification response |
|---|---|---|
| Cord burns and cuts | AKC guidance | Flat tape instead of thin cord |
| Recoil when a clasp breaks | CPSC recall, 2008 | Clip and swivel tested well above rated load |
| Sudden stop at full extension | AKC guidance | Brake tested under sudden load; weight rating on pack |
| Hand and finger injuries | Hand-surgery review, 2024 (all leash types) | Handle design and a warning against wrapping |
Explore private-label product options.
No-pull dog harness — materials, customization and sample checks Standard dog leash — materials, customization and sample checks Adjustable webbing collar — materials, customization and sample checksSources and research context
Sources reviewed 2026-09-18. Community excerpts are anecdotes. Manufacturer guidance applies to that manufacturer’s products. Shortlists are editorial comparisons without hands-on comparative testing or verified sales rankings.
- Forrester MB · Dog leash-related injuries treated at emergency departments · American Journal of Emergency Medicine, 2020
- Maxson R et al. · Epidemiology of dog walking-related injuries among adults presenting to US emergency departments, 2001–2020 · Medicine & Science in Sports & Exercise, 2023
- Plusch K et al. · Hand and wrist dog-leash injuries in the outpatient setting: a review of 443 cases · Hand, 2024
- U.S. Consumer Product Safety Commission · Worldwise recalls retractable dog leashes; metal clasp can break (3 September 2008)
- American Kennel Club · Retractable dog leashes: how to use them safely (updated March 2026)
TURN THE ANSWER INTO AN OEM BRIEF
