- Colorado State University Guide to Poisonous Plants - Searchable database from the College of Veterinary Medicine and Biomedical Sciences.
- 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.
- Daffodil Poisoning - ProVet healthcare information article on daffodil poisoning in dogs.
- Holly Poisoning - ProVet healthcare information article on holly poisoning in dogs.
- List of Plants Poisonous to Dogs and Ccats - List compiled by the ASPCA Animal Poison Control Center.
- Marijuana Exposure in Animals - Toxicology brief prepared by Caroline Donaldson, DVM, of the ASPCA Animal Poison Control Center.
- Mistletoe Poisoning - ProVet healthcare information article on mistletoe poisoning in dogs, horses and cattle.
- Plants and Your Cat - Cat Fanciers Association list of plants which can be poisonous to cats.
- Plants Causing Sudden Death - Article by A. P. Knight and R. G. Walter on plants that can cause sudden death in animals.
- Plants Dangerous to Your Reptile or Amphibian - Plants that are poisonous and possible deadly to your reptile or amphibian.
- Plants Poisonous to Goats - Scientific article from the Extension Goat Handbook by the National Agricultural Library.
- 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.
- Plants Which Are Potentially Poisonous - Common plants, their fruits, and seeds that can be poisonous to cats.
- Poisonous Plants for Small Animals - Plants that are poisonous and possible deadly to your dog, cat, or pocket pet.
- Poisonous Plants for Birds - A listing of plants which are poisonous for birds, and a listing of those that are safe.
- Poisonous Plants in Indiana - Purdue University list of plants poisonous to animals, clinical signs, and species affected.