The Neck Halter can be tied and then dropped over the animal’s head, or tied to fit around the neck. The method shown here pre-ties the loop. To tie the halter around an animal’s neck, first form the Figure-Eight Knot then pass the end of the rope around the animal’s neck, down through the Figure-Eight Knot and finish with an Overhand Knot.
Neck Halter Knot
1. To pre-tie the halter, start by putting an Overhand Knot in the end of the rope.

2. Now form the loop in the line, then take the working end back across the standing part.

3. Form a second loop to create the Figure-Eight.

4. Push a loop of the rope through the first part of the Figure-Eight.

5. Work the Figure-Eight tight around the sliding part of the loop.

Knots in Action: To complete the Neck Halter, pull on the loop so that the Overhead Knot settles against the Figure-Eight Knot. The Neck Halter is suitable for use on horses, cows, and other animals. It provides a fixed loop, which is adjustable once it has been formed, by moving the Overhand Knot.

Read more from The Knot Tying Bible
Reprinted with permission from The Knot Tying Bible: Climbing, Camping, Sailing, Fishing, Everyday by Colin Jarman and published by Firefly Books, 2013.