Retractable leashes have handles that are large and unwieldy. They are hard to handle and easy to drop. A dropped leash handle can result in a loose dog or more entanglement dangers. Dogs that are timid are usually quite startled when a retractable leash handle is dropped, as it is quite loud. If this happens and the dog jumps or runs, the handle follows along, scraping, bumping, and making more noises.