- [Wiki]
http://en.wikipedia.org/wiki/Choloepus_didactylus.
- [AnAge]
http://genomics.senescence.info/species/entry.php?species=Choloepus_didactylus.
- [HarpEyre2003]
Harper, L., Eyre, S., Kibbey, C., and Partridge, J. P. (2003).
Hand-rearing a two-toed sloth Choloepus didactylus at {Bristol
Zoo Gardens}.
Int. zoo Yb., 38:178--186.
- [Kooy2010]
Kooijman, S. (2010).
Dynamic Energy Budget theory for metabolic organisation.
Cambridge Univ. Press, Cambridge.