As I was riding in the elevator today a group of co-workers were discussing Fainting Goats.
I had never heard of them before so when I got back to my desk I did some research.
Yup, they exist. They are also referred to as Myotonic, Tennessee Fainting, Nervous, Stiff Legged and Scare goats. apparently they have a genetic condition called myotonia congenita, a condition in which the muscle cells experience prolonged contraction when the goat is startled.
The actual degree of stiffness may vary widely from goat to goat and is based on a number of factors, including age, species purity, and degree of fright.
There is even an International Fainting Goat Association.
check out this informative and ridiculously funny video of fainting goats