If the collar is properly adjusted, it will tighten just to the size of your dog's neck, without choking them. When your dog tries to back out of the martingale, the collar tightens around their neck. The leash attaches to a ring on this loop. A separate loop of material passes through the two rings. The martingale consists of a length of material with a metal ring at each end. A martingale collar is a must-have for anxious and fearful dogs. It is also useful for a dog of any breed who is adept at slipping out of their collar or for fearful dogs who may try to retreat while out on a walk. This collar is designed for dogs with narrow heads such as Greyhounds, Salukis, Whippets and other sighthounds. The martingale collar is also known as a limited-slip collar. The rule of thumb says you should be able to get two fingers underneath the collar. A flat collar should fit comfortably on your dog's neck it should not be so tight as to choke your dog nor so loose that they can slip out of it. It has a buckle or plastic snap ('quick-release') closure and a ring for attaching identification tags and leash and is available in many colors and designs.

Read on to figure out which type of collar is best suited to your beloved pooch. There are so many styles of collar out there that it's easy to get one that reflects your dog's (or your) personality-but collars serve purposes beyond identification and decoration and not all kinds of collars are appropriate for all, or even any, dogs. Every dog needs a collar, chiefly because they need something on which to hang their leash, license, ID and rabies vaccination tag.

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