Martingale Dog Collar Martingale Collar for Dogs has excellent camouflage, the links are built directly into the collar, making the structure very stable. It looks like a regular collar. Martingale Training Collar is truly an effective training tool that can be used to correct incorrect behavior. Help you achieve more control during training or walking. Effective Behavior Training It may be difficult to walk a dog when it is pulling on the leash or barking at passersby. Dog Collar Martingale is a safe and effective communication tool, it can evenly press the neck, like a mother dog holding a dog and correcting it with her teeth.