Slowly but surely a rehabilitation center in Costa Rica is helping a population of vulnerable sloths, the world's slowest mammals.

Since 1991, Judy and Luis Arroyo have cared for the at-risk creatures, including orphaned babies whose mothers died in the jungle. Their first rescue was a young, three-toed sloth named Buttercup who couldn't return to the wild, but who thrived at their sanctuary, located in the coastal city of Limón.

According to Today, recent urban development has further disrupted the natural habitat of local sloths, sometimes resulting in severe electrocution and the need to amputate fingers. In this video, Judy Arroyo discusses her rescue, research and rehabilitation work with the much-loved species.

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