Martingale (collar)

A martingale is a type of dog collar that provides more control over the animal without the choking effect of a slip collar.

The martingale dog collar was designed for sighthounds because their necks are larger than their heads and they can often slip out of buckle collars.

These collars have gained popularity among owners of other breeds in the recent past with many trainers now recommending them instead of choke chains or buckle collars.A martingale collar is made with two loops.

When the dog tries to pull, the tension on the lead pulls the small loop taut, which makes the large loop smaller and tighter on the neck, thus preventing escape.

[2] Properly fitted, the collar will be comfortably loose whenever the dog is not pulling against the leash.

A brindle greyhound with a low-profile martingale collar
Martingale collar with chain loop; martingale collars also come with a fabric flat tab or loop instead of a chain, and optional buckles on both styles.
A greyhound displays a martingale collar.