Three-Toed Sloth (IMAGE) University of Wisconsin-Madison Caption A baby three-toed sloth is part of ongoing studies of the animals at a site in northeastern Costa Rica. Researchers from the University of Wisconsin-Madison have published a new report on sloth energetics, helping explain why sloths live a slow-motion lifestyle. Credit UW-Madison/Zach Peery Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.