Here's a 6 foot long navy blue and orange 4-strand diamond braid "Auburn Tigers" paracord dog leash.
I used 40 feet of paracord(20 ft navy blue and 20 feet orange). Find the middle of the cords, attach to a snap hook(you can find the snap hooks at Wal-Mart in the hardware section), and start braiding down from there.
Braid enough past 6 feet for the wrist strap and finish with a square sinnet, trim and melt the ends. I use about a foot or so of paracord to bind(whipping type binding, trim and melt the ends) to the main part of the leash for a wrist loop.