Here are some links that I have found useful or interesting in the past, mostly Herp and Bird related.
Animal Diversity Website – University of Michigan Museum of Zoology
http://animaldiversity.ummz.umich.edu/site/accounts/classification/Reptilia.html
Amphibian Species of the World - American Natural History Museum
http://research.amnh.org/herpetology/amphibia/index.php
Amphibia Web
http://amphibiaweb.org/
Austin Texas area Reptiles and Amphibians
http://www.austinreptileservice.net/austin_area_reptiles.html
Australian Herpetology Links
http://www.kingsnake.com/australia/australia.htm
Birds, Butterflies and Dragonflies of San Diego County and Other Places
http://sdbirds.basiclink.com/
Bolivia Herpetology
http://www.herpetology-bolivia.com/englishstart2.htm
California Salamanders
http://montereybay.com/creagrus/CAsalamanders.html
California Reptiles and Amphibians
http://www.californiaherps.com/
Amphibian Photo Library – UC Berkely CalPhotos
http://calphotos.berkeley.edu/fauna/com-Amphibian.html
Reptile Photo Library – UC Berkely CalPhotos
http://calphotos.berkeley.edu/fauna/com-Reptile.html
West Indian Amphibians and Reptiles
http://evo.bio.psu.edu/caribherp
Center for North American Herpetology
http://www.cnah.org/
Common Names of Australian Reptiles
http://www.kingsnake.com/australia/common.htm
Harvard University Department of Herpetology
http://www.mcz.harvard.edu/Departments/Herpetology/
Encyclopedia of Japanese Reptiles
http://homepage3.nifty.com/japrep/englishtop.htm
Frogs Australia Network
http://frogsaustralia.net.au/
Frogs of Australia
http://frogs.org.au/frogs/index.html
Herps of Texas
http://www.zo.utexas.edu/research/txherps/
Reptiles and Amphibians of Mexico
http://www.herpscope.com/fieldguide/MX.html
Houston Herptiles
http://www.geocities.com/houstonherpkey/index.html
The Reptiles of Australia
http://www.kingsnake.com/oz/
FrogwatchUSA – National Wildlife Federation
http://www.nwf.org/frogwatchUSA/
Herpetofauna of North Queensland – James Cook University
http://www.jcu.edu.au/school/tbiol/zoology/herp/NQherplist.shtml
Kentucky Snake Identification
http://www.kentuckysnakes.org/snake_region.cfm
Reptiles of Arizona
http://www.reptilesofaz.com/
Scientific and Common Names of the Reptiles and Amphibians of North America
http://ebeltz.net/herps/etymain.html
Snakes of North America
http://www.pitt.edu/~mcs2/herp/SoNA.html
North Carolina Partners in Amphibian and Reptile Conservation
http://www.bio.davidson.edu/people/midorcas/ncparc/ncparc.htm
Queensland Museum Information Leaflets
http://www.qmuseum.qld.gov.au/inquiry/leaflets/index.asp
Checklist of Baja California Reptiles – San Diego Natural History Museum
http://www.sdnhm.org/research/herpetology/bajarept.html
Scientific and Standard English Names of Reptiles and Amphibians
http://herplit.com/SSAR/circulars/HC29/Crother.html
Snakes of Thailand
http://www.siam-info.de/english/snakes_non-poisonous.html
Snakes of Europe
http://www.herper.com/ebooks/titles/Europesnakes.html
South Carolina Reptiles and Amphibians
http://www.snakesandfrogs.com/
Snakes of Tennessee
http://frogsandsnakes.homestead.com/snakes.html
The Animal Diversity Website – Reptiles
http://animaldiversity.ummz.umich.edu/site/accounts/information/Reptilia.html
Snakes of the Midwest
http://herpcenter.ipfw.edu/index.htm?http://herpcenter.ipfw.edu/outreach/MWsnakes.htm&2
The EMBL Reptile Database
http://www.embl-heidelberg.de/~uetz/LivingReptiles.html
Reptiles and Amphibians of Nebraska
http://snrs.unl.edu/herpneb/
Field Guide to Reptiles and Amphibians of Coastal California
http://www.werc.usgs.gov/fieldguide/
Lizards of the Australian Wet Tropics
http://www.jcu.edu.au/school/tbiol/zoology/herp/wtlz/wtlz.html
Mexico Herpetology
http://www.jcu.edu.au/school/tbiol/zoology/herp/wtlz/wtlz.html
American Museum of Natural History – Herpetology Link
http://research.amnh.org/herpetology/
Herpetology Literature Links
http://www.herplit.com/contents/
Venomous Snake Systematics
http://sbsweb.bangor.ac.uk/~bss166/update.htm
Reptiles and Amphibians of Austin TX area
http://www.austinreptileservice.net/austin_area_reptiles.html
ASIH Homepage
http://www.asih.org/
Bay Area Amphibian and Reptile Society
http://www.baars.org/links.html
Tucson Herpetological Society
http://tucsonherpsociety.org/newslt97.html
Venomous Reptiles.org
http://www.venomousreptiles.org/
Sweden Herpetological Site (Smalands Herpetologiska Forening)
http://www.smhf-herp.se
Foto Search Stock Photos
www.fotosearch.com