"Scientists in the eastern German city of Jena said Wednesday they have finally given up after three years of failed attempts to entice a sloth into budging as part of an experiment in animal movement."
They tried to get Mats to climb a pole for 3 YEARS! Even after being tempted with cucumbers and spaghetti he didn't budge for the experiment.
http://www.foxnews.com/story/0,2933,246422,00.html