Wikipedia: Sloth
- Encyclopedia article physical attributes of this animal.
- http://en.wikipedia.org/wiki/Sloth

Sloth
- Article from Encarta Encyclopedia provides a brief introduction to these slow-moving creatures.
- http://encarta.msn.com/encyclopedia_761562271/Sloth.html

Ground Sloths
- Introduces four species believed to have inhabited the United States at the end of the last Ice Age.
- http://www.museum.state.il.us/exhibits/larson/sloth.html