Scientists from the Zoological Society of London exploring in Sri Lanka have encountered an animal so rare it was thought to be extinct.  The Horton Plains Slender Loris was first discovered on the island nation in 1937 and only seen four times since then, the last time in 2002.  The loris was, according to a report filed with Agence France Presse, photographed and actually captured by the scientists, who performed a complete physical examination of it before releasing it back in the wild.  There is still great concern that the creature will become extinct because its habitat, a rich forest, is being destroyed to make way for tea plantations.  It's about six inches long, has grayish short soft fur and large red eyes.