Which type of collar is known for restricting breathing through aversive methods?

Choke chains are designed to restrict a dog's movement by tightening around their neck when pulled. This type of collar employs aversive methods by causing discomfort or distress to the animal as a way to discourage unwanted behaviors. The tightening mechanism can restrict breathing, especially if the collar is not used correctly or if the dog pulls hard on the leash.

Choke chains can create a negative association with training and lead to fear and anxiety in the dog. In contrast, padded, standard, or adjustable collars are meant for comfort and control without inflicting pain or restriction to the extent that a choke chain does. These other collars aim to harness the dog's movement and provide a more positive experience during training and walks, fostering a better relationship between the pet and owner while minimizing stress.