Related Links:
http://www.inhs.uiuc.edu/cbd/herpdist/species/am_tigrinu.html
http://coloherp.org/geo/species/speamti.php
http://www.aquatic.uoguelph.ca/amphibians/amphib/accounts/ambystomidae/tiger/account.htm
http://www.itis.usda.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=173592
http://www.npwrc.usgs.gov/resource/1998/atrazine/atrazine.htm
http://www.jcu.edu.au/school/phtm/PHTM/frogs/papers/davidson-2003.PDF
http://www.livingunderworld.org/gallery/photos/caudata/ambystomatidae/ambystoma/tigrinum/