Leash walking
What is a martingale collar and what is it used for?
Last updated 23 September 2026 · How we write and check this
Short answer
A martingale collar has a second small loop that tightens slightly when the leash is pulled taut, enough to prevent a dog from backing out of it, but stops short of choking. It is especially popular for narrow headed breeds like Greyhounds and Whippets, whose heads are often the same width as their necks, making a standard collar easy to slip.
How it differs from a slip lead
Unlike a slip lead, which can keep tightening indefinitely, a martingale collar has a limited range of tightening built into the design, so once the small loop is fully closed it stops constricting further. This makes it a safer everyday option for dogs prone to slipping collars.
Which dogs benefit most
Sighthounds, along with any dog with a thick neck and a smaller head, such as some Bulldogs, are common candidates for a martingale, since these body shapes make it easier for a dog to back out of a standard buckle collar during a sudden turn or startle.
Fitting it correctly
A martingale should sit loose around the neck normally, tightening only when the leash is pulled, and the small loop should fully close with about a finger's width of space, not gape open or tighten so much it presses hard on the throat.
Key takeaways
- A martingale collar tightens slightly under tension but stops before it can choke.
- It is a popular choice for narrow headed breeds like Greyhounds that slip standard collars.
- Unlike a slip lead, its tightening range is limited by design.
- Fit it so the small loop closes with roughly a finger's width of space, not fully flat against the neck.