Dog Whisperer Training Dog Leash in BlackUnlike a traditional leash, our Dog Whisperer Training Dog Leash features a slip collar instead of the traditional metal snap hook, so a collar is not required. The training leash is designed as a training aid for walking your dog. This leash offers greater control when walking as the neck piece can be placed correctly behind ears for maximum control and an added nylon stopper keeps it in place. It provides the ability to give a firm, yet quick and gentle, correction that eases up when the pressure is released. For your dog's safety, no slip collar of any kind should be left on an unsupervised dog.