This is a step by step instruction on how to splice 3 strand twisted cotton rope into a small circle with a tennis ball in the center to act as a dog toy. This line splicing is often used by sailors but for today it's for the dog toy. Makes a nice gift for any dog or dog lover; cheaply. The rope/ line used in the video was purchased at a feed and tack store and is rated for animal use. Do not use nylon for dog toys.