Poisons and Toxins 

• National Animal Poison Control Center
  This is the website of the National Animal Poison Control Center. It includes a library, links to other sites, and phone numbers for the poison control center.
• Plants Toxic to Animals -- Cornell
  A lot of information about toxic plants can be found here. You can search under common name or scientific name of the plant.
• Veterinary Information Network
  VIN is the world's first and largest online veterinary community.  Go here to visit Veterinary Partner, where you can find a wide variety of health and behavior information.
• Pet Poison Helpline (phone only) (800)213-6680  ($35 fee)