This photo of a sloth was taken at the Boonshoft Museum of Discovery. The first time that I saw a sloth was in Costa Rica. I could not believe how slow the sloth moved! They actually move at an average speed of 10 ft./m (Wikipedia). 

Sloth is also a term for spiritual apathy and inactivity. It is easy to see on a superficial level how this association could be made with the animal sloth. But the animal has simply adapted a lifestyle based on its anatomy and physiology. For people, I think it is unfortunately more often the other way around.