Colorado State University Guide to Poisonous Plants  
   Searchable database from the College of Veterinary Medicine and Biomedical Sciences.
   http://www.vth.colostate.edu/poisonous_plants/

Cornell University Poisonous Plants  
   Searchable database includes plant images, pictures of affected animals and presentations concerning the botany, chemistry, toxicology, diagnosis and prevention of poisoning of animals by plants and other natural flora.
   http://www.ansci.cornell.edu/plants/index.html

Daffodil Poisoning  
   ProVet healthcare information article on daffodil poisoning in dogs.
   http://www.provet.co.uk/petfacts/healthtips/daffodilpoisoning.htm

Holly Poisoning  
   ProVet healthcare information article on holly poisoning in dogs.
   http://www.provet.co.uk/petfacts/healthtips/hollypoisoning.htm

List of Plants Poisonous to Dogs and Ccats  
   List compiled by the ASPCA Animal Poison Control Center.
   http://www.aspca.org/site/DocServer/poisonousplantsdogscats.pdf?docID=109&AddInterest=1101

Marijuana Exposure in Animals  
   Toxicology brief prepared by Caroline Donaldson, DVM, of the ASPCA Animal Poison Control Center.
   http://www.aspca.org/site/DocServer/toxbrief_0602.pdf?docID=101&AddInterest=1101

Mistletoe Poisoning  
   ProVet healthcare information article on mistletoe poisoning in dogs, horses and cattle.
   http://www.provet.co.uk/health/diseases/mistletoe.htm

Plants and Your Cat  
   Cat Fanciers Association list of plants which can be poisonous to cats.
   http://www.cfainc.org/articles/plants.html

Plants Causing Sudden Death  
   Article by A. P. Knight and R. G. Walter on plants that can cause sudden death in animals.
   http://www.ivis.org/special_books/Knight/chap1/chapter_frm.asp?LA=1

Plants Dangerous to Your Reptile or Amphibian  
   Plants that are poisonous and possible deadly to your reptile or amphibian.
   http://www.peteducation.com/article.cfm?cls=17&cat=1913&articleid=1612

Plants Poisonous to Goats  
   Scientific article from the Extension Goat Handbook by the National Agricultural Library.
   http://netvet.wustl.edu/species/goats/goatpois.txt

Plants Poisonous to Livestock in Minnesota  
   This bulletin describes their appearance, where they grow, the parts of the plant that are poisonous, when they are most poisonous, poisoning symptoms, and names of the toxic compounds present in the plant. For livestock owners.
   http://www.extension.umn.edu/distribution/livestocksystems/DI5655.html

Poisonous Plants for Small Animals  
   Plants that are poisonous and possible deadly to your dog, cat, or pocket pet.
   http://www.peteducation.com/article.cfm?cls=18&cat=1914&articleid=1616

Poisonous Plants for Birds  
   A listing of plants which are poisonous for birds, and a listing of those that are safe.
   http://www.peteducation.com/article.cfm?cls=15&cat=1912&articleid=2236

Poisonous Plants in Indiana  
   Purdue University list of plants poisonous to animals, clinical signs, and species affected.
   http://vet.purdue.edu/depts/addl/toxic/navigate.htm

Plants Which Are Potentially Poisonous  
   Common plants, their fruits, and seeds that can be poisonous to cats.
   http://www.peteducation.com/article.cfm?cls=1&cat=1418&articleid=1552