Customs Regulations for France
French customs regulations and allowances outlined.
http://www.terrace.qld.edu.au/academic/lote/french/virtualparis/custreg.htm

Douane.gouv.fr
Contains detailed information on French customs regulations, as well what animals, plants and foods you are allowed to import in to the country. In English and other European languages.
http://www.douane.gouv.fr/

Embassy of France in America
Key contacts in the French Customs department.
http://info-france-usa.org/america/embassy/customs/cover.htm

European Commission
Get the lowdown on the European Union's customs policy.
http://europa.eu.int/comm/taxation_customs/customs/customs.htm

In Transit
Offers a general overview of French immigration rules.
http://www.intransit-international.com/moving_french_immigration_france.html

Ministry of Foreign Affairs
Click on "Entering France" for information about importing animals into the country.
http://www.france.diplomatie.fr/index.gb.html