Vibration collars are training devices designed for pets, particularly dogs. They emit vibrations as a form of communication, helping to get the pet's attention without using harsh methods. These collars are often used to reinforce commands or to redirect unwanted behaviors. Typically, vibration collars come with adjustable settings, allowing pet owners to choose the intensity of the vibration. They are often part of a broader training system that may include features like sound or static stimulation. Many trainers and pet owners find them useful for teaching commands or managing barking in a humane way.