It is recommended that recall training leashes be 6 to 12 feet long. This training process helps dogs learn how to return to their owner's side after being stray or lost. There are different lengths of leashes for recall training, but the average length is six to twelve feet long. When choosing a leash for your recall training, it is important to consider the dog's size and personality. If the dog is small or unsure of his surroundings, a shorter leash may be better suited. However, a longer leash may be better if the dog is more confident and active. Information:-100 ft dog leash