Gear & equipment
Slip lead vs martingale vs flat collar
These three tools look similar on a hook by the door and behave very differently on a dog. One holds tags, one helps keep a whippet from slipping out backwards, and one gives a handler a fast, clear signal with a light hand. Our Puppy Fundamentals and On-Leash Foundations programs send a slip lead and a training collar home, so here is how we think about all three.
Last reviewed October 4, 2026
How each works
Three designs, three different jobs.
A flat collar buckles or clips at a fixed size and is the one that should carry ID tags. Fit it so two fingers slide underneath. A martingale has a second, smaller loop that draws the collar in when the leash tightens, but only to a set limit. Set it so the two rings stay a little apart when fully tightened, snug without choking, and the collar still cannot slip over the ears. Sighthounds and other narrow-headed dogs are the classic case.
A slip lead is a leash with a ring at one end, forming a loop with no limit. It sits high on the neck, just behind the ears and under the jaw, where a small, quick signal is clear to the dog. It is a handling and training tool, not something to tie a dog with, and it comes off when the session or walk ends. Held tight, it simply becomes a different way to pull.
- Flat collar carries the ID
- Martingale rings stay slightly apart
- Slip lead sits behind ears
- Slip lead off when unattended
Common mistakes
Where these tools go wrong, and what our programs teach.
Most of the trouble comes from fit and habit. A flat collar loose enough to back out of. A martingale sized so loosely it slips over the ears. A slip lead worn low near the shoulders, where it slides and invites leaning. A slip lead left on an unattended dog in a crate, car or yard, where the loop can catch. And any tool held at constant tension, which teaches a dog to lean into it.
Puppy Fundamentals and On-Leash Foundations both send a slip lead and a training collar home with your dog, and the handover lesson shows you how to fit and handle each one. Skills are taught with markers and rewards first; the tool is matched to the individual dog, introduced properly, and then taught to you. If your dog already pulls, lunges or backs out of gear, the consultation is where we look at what fits, and sometimes that is a single private session.
Asked and answered
The questions people ask us.
Is a slip lead cruel?
A slip lead is a tool, and how it is fitted and handled decides how it feels to the dog. Worn high, used with brief, light signals and loosened straight away, it communicates clearly. Held tight or left on an unattended dog, it is the wrong tool used the wrong way.
Martingale vs flat collar: which should a dog wear?
Many dogs do well in a flat collar for ID and everyday walks. A martingale earns its place for dogs whose heads are narrower than their necks, or who have backed out of a flat collar before. Fit either one carefully and recheck it as your dog grows.
Should a dog wear a slip lead all the time?
No. A slip lead is for walks and training sessions with you holding the other end. Take it off afterwards, and let a fitted flat collar carry ID tags around the house.
Why do your programs use a slip lead?
It is simple, quick to put on, and gives a clear signal with a light hand when it is fitted high on the neck. We match each tool to the individual dog and teach you to use it before your dog comes home.
Keep reading
Not sure which tool fits?
Book a consultation and bring the gear you already use. We will show you what suits your dog and what to skip.
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