A prong collar is a type of dog training collar designed to help control a dog's behavior during walks. It consists of a series of metal links with prongs that face inward, applying pressure to the dog's neck when pulled. This collar is often used for larger or stronger dogs that may be difficult to manage with standard collars. While some trainers find prong collars effective for correcting unwanted behaviors, they can also be controversial. Critics argue that they may cause pain or discomfort to the dog if not used properly. It's essential for dog owners to understand how to use them safely and consider alternative training methods.