Which of the following components is exclusively found on western saddles?

The swell is a component that is specifically designed and exclusively found on western saddles. It is the rounded part at the front of the saddle, just below the horn. The swell serves to add stability and support for the rider, allowing for a more secure seat while riding, particularly during activities that involve quick movements or roping.

In contrast, other saddles, such as English saddles, do not have a swell; instead, they typically have a more streamlined and flatter design. The pommel, cantle, and skirt are elements that can be found on both western and English saddles, although their shapes and functions may vary slightly between the different styles. The pommel is located at the front, the cantle at the back, and the skirt is the leather that makes up the saddle’s underside, providing additional structure and comfort. The presence of the swell as a distinctive feature is what makes it unique to western saddles.