A 20ft tie-out cable for dogs up to 10lbs typically refers to a type of leash that allows dogs to roam outdoors within a certain range. The 'snap' likely indicates a snap hook, which is a fastening device that can be quickly and securely attached to a dog's collar or harness. This kind of tie-out cable is useful for pet owners who want to give their small dogs some outdoor freedom while ensuring they stay within a safe distance.