Though painless, this generally results in the animal collapsing on its side with the side effect of everyone around laughing their asses off.
The characteristic is caused by a hereditary genetic disorder called myotonia congenita. Older goats sometimes learn to lean against something to prevent their falling over, and often they continue to run about in an awkward, stiff-legged shuffle.
Now that we’ve all had a good laugh, here is a little more information about this breed of goat.
Myotonic goats are also called Wooden Leg goats, “stiff leg” or Tennessee fainting goats. These are one of the few goats that are indigenous to the U.S. There are two strains of this animal. Most of those found in Tennessee and the eastern U.S. are smaller. When the goat is being fed or becomes startled its muscles become stiff allowing the goat to fall on the ground in a fainting position.