This bone extends from beneath the structures of the knee to the fetlock
joint below. Along the cannon bone runs a smaller bone, called the splint bone. In most light horse breeds a cannon bone circumference that is greater than 8 inches is desirable. This means the horse has substantial bone mass to carry a load and withstand work. These bones are somewhat equivalent to the bones in a human’s palm. From the horse’s knee downwards the foreleg bones are vestiges of former toes. That is why it’s sometimes said a horse runs on its fingers and toes.
Pronunciation: kan non
Common Misspellings: canon
The sturdy Arabian mare had a substantial 8" cannon bone.