Definition: The region where the back ends is the loin. This can be a very sensitive area on some horses
Examples: The horse would buck if you slid back and sat on its loins.
By Katherine Blocksdorf, About.com
#6: Many horses flinch, or even buck if pressure is applied to the loins.
K. Blocksdorf 2006Understanding Equine DigestionWhat is a Horse?Understanding Your Horse's Hooves
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