Knot Again

A Proper Horse Handling Rope
http://www.kbrhorse.net/tra/halter02.html

How to Tie a Quick Release Knot
http://www.equisearch.com/care/howto/knot/

Safe Knots for Tying Horses
http://www.kbrhorse.net/tra/halter03.html

Tying A Rope Halter (knots)
http://www.naturalhorsesupply.com/tiehalter.shtml