First time I saw anything like that was one of the episodes of House MD.
Very neat new way of taking a look inside the GI tract!
Much easier than endoscopy and no anesthesia needed. The tiny capsule equipped with 4 cameras can handle about 18 hours of 360 degree view video of the digestive tract.
It's been only available for animals for about 6 months.
Easier on the dogs, no anesthesia, lower cost, no hospital stay ... I'll be looking when our vet might get these.
Tiny Capsule Revolutionizing Veterinary Technology