A pet seat belt is a safety device designed to secure pets in a vehicle, preventing them from moving around while the car is in motion. It typically attaches to the car's seat belt system and connects to a harness worn by the pet. This helps protect both the pet and passengers in case of sudden stops or accidents. Using a pet seat belt can reduce distractions for the driver and minimize the risk of injury to the pet. Many models are adjustable and come in various sizes to accommodate different breeds, ensuring a snug and comfortable fit for your furry friend.