yes it is a very loose knot as if you pull the short piece of single rope it will come undone
a quick release know is one that if you tie your horse up , if he/she gets freaked out and start to panic, they cant pull the know loose (its impossible) but if you grab the other end, you can pull it loose almost immediate, with out actually untying anything. its a split second knot! as for how to make one, go on google and google images
There are many quick release knots, there is no other name for them. The simplest is a half hitch. A cow hitch or lark's head is quick release, and a slip knot can be released and spilled quickly.
The knot should be tight so the horse can't pull it loose, but make sure the knot is a quick release knot and never leave a tied horse alone, because if he were to panic and no one was there to release him, he could break a halter/lead rope, which would teach him bad habits, or even worse, he could hurt himself.
Tie a quick, loose, releasable knot that will give give if he gets spooked or tries to run.
tie a quick release knot that can be immediately undone in event of an emergency.
Use the quick-release knot. It's perfect for keeping your horse in spot and it's easy to untie in an emergency.
The best knot to use is the Quick Release Knot, it is safe and easy. Go to http://horses.about.com/od/basiccare/ss/quickrelease.htm for step by step instructions
The most secure knot to use when tying up a horse is called the Quick Release Knot. It is very simple, and one of the easiest to learn. It is handy in the way that you can simply grab the end of the rope and pull, and the knot in the rope will release immediantly. For info on how to tie this knot, try here: http://www.newrider.com/Starting_Out/Getting_Ready/quick_release_knot.html
A binding knot is a knot which may be used to keep an object or multiple loose objects together.
Use a lead rope (instead of the reins) and use a safety knot or also called a quick release knot to tie him up. If you use the reins it will make the horse bit shy if it were to pull away hard or spook. you don't want it too tight because if there's an emergency, you'll need to untie it fast. But you dont want it too loose either because he could get loose. :D
a loose not but not too loose.
loose noose is an answer.