This is one of the craziest things I’ve ever seen or heard of. I was raised in a very rural area around all sorts of livestock but never saw this once in my life I’m not sure whether to smile or feel sad for the goats... : ) http://www.youtube.com/watch?v=f_3Utmj4RPU&feature=related A little more info: http://www.faintinggoatsite.com/
My nephew had an animal farm much like the one in the video, some years back. The goats did just that. When you chased them a bit they stiffened and dropped to the ground. They were 'frozen' a minute or two then popped back up. A strange adaptation for sure.