ASPCA - The American Society for Prevention of Cruelty to Animals
Animal Poison Control Center
www.aspca.org    
888-426-4435 - 24 hour Emergency Veterinary Poison Hotline

Poisonous Plant Sites
     National Poison Control Sites

Plants Toxic to Animals - Veterinary Medicine Library
http://www.library.uiuc.edu/vex/
http://www.library.uiuc.edu/vex/toxic/comlist.htm

US FDA Poisonous Plant Database
http://www.cfsan.fda.gov/~djw/plantox.html

Reptile Resource - Poison Plant List

Poisonous Plant List & Resources - Melissa Kaplan Plant Collection
http://www.anapsid.org/mainplants.html#toxic 
     Varoius resources & information on edible & poisonous plants
              

Pet Bird - Poison Plant List
              
Birds n Ways - Hazardous Plants List
http://www.birdsnways.com/articles/plntstox.htm

Poisonous Plants for Birds
http://www.peteducation.com/article.cfm?cls=15&cat=1912&articleid=2236