Smooth newt  (Triturus vulgaris)

Cloaca: a common opening into which the reproductive, alimentary and urinary systems open.
Larvae: stage in an animal's lifecycle after it hatches from the egg. Larvae are typically very different in appearance to adults; they are able to feed and move around but usually are unable to reproduce.
Metamorphosis: an abrupt physical change from the larval to the adult form.
Subspecies: a different race of a species, which is geographically separated from other populations of that species.

1. National Biodiversity Network Species Dictionary (January 2003):
   http://www.nhm.ac.uk/nbn
   
2. The Environment Agency (1998) 'Look-up' chart of species and their legal status. Species and Habitats Handbook. The Environment Agency, Bristol.
   
3. The Herpetological Conservation Trust: Smooth Newt fact sheet (January 2003):
   http://www.hcontrst.f9.co.uk
   
4. Amphibia Web. Smooth newt. (January 2003:
   http://elib.cs.berkeley.edu/aw/search/index.html
   
5. Beebee, T & Griffiths, R. (2000) The New Naturalist: Amphibians and reptiles- a natural history of the British herpetofauna. Harper Collins Publishers, London.