crupper

thumb|Crupper goes under the top of the tail and helps to stabilize harness thumb|right|Crupper attached to the back of a saddle A crupper (; occ. spelled crouper) is a piece of tack used on horses and other equids to keep a saddle, harness or other equipment from sliding forward.

==Construction== thumb|Antique Japanese cruppers designed for saddles The crupper consists of a loop (the crupper itself) and an adjustable strap (crupper strap or back strap) that connects the crupper to back of a riding saddle or the other parts of a harness. The strap runs from the horse's dock, over the croup, to the saddle or to the back band (sometimes called the saddle) of a harness.