http://www.earthsendangered.com/index_s.asp
http://www.invasivespeciesinfo.gov/
http://www.iucnredlist.org/
http://library.thinkquest.org/11353/e-animals.htm
http://worldwildlife.org/species/
http://www.amnh.org/nationalcenter/Endangered/
http://fwp.mt.gov/wildthings/tande/
http://endangeredspecie.com/
http://www.fws.gov/endangered/
http://plants.usda.gov/
http://animals.nationalgeographic.com/animals/
http://www.eoearth.org/
http://fieldtripearth.org/
http://www.indianawildlife.org/
http://www.dcnr.state.pa.us/forestry/wildplant/invasive.aspx
http://kidsplanet.org/factsheets/map.html
http://www.epa.gov/bioindicators/html/indicator.html
http://extinctanimal.com/
http://www.in.gov/dnr/naturepreserve/
http://animalinfo.org/
http://www.itsnature.org/
http://oddee.com/item_88742.aspx
http://issg.org/database/welcome/
http://www.invasivespecies.org/
http://www.invasivespeciesinfo.gov/
http://www.iucnredlist.org/
http://library.thinkquest.org/11353/e-animals.htm
http://worldwildlife.org/species/
http://www.amnh.org/nationalcenter/Endangered/
http://fwp.mt.gov/wildthings/tande/
http://endangeredspecie.com/
http://www.fws.gov/endangered/
http://plants.usda.gov/
http://animals.nationalgeographic.com/animals/
http://www.eoearth.org/
http://fieldtripearth.org/
http://www.indianawildlife.org/
http://www.dcnr.state.pa.us/forestry/wildplant/invasive.aspx
http://kidsplanet.org/factsheets/map.html
http://www.epa.gov/bioindicators/html/indicator.html
http://extinctanimal.com/
http://www.in.gov/dnr/naturepreserve/
http://animalinfo.org/
http://www.itsnature.org/
http://oddee.com/item_88742.aspx
http://issg.org/database/welcome/
http://www.invasivespecies.org/