This is an excellent online resource for any animal poison-related emergency, 24 hours a day, 365 days a year. The ASPCA’s Animal Poison Control Center provides a helpful quick reference list of common plants that are known to be poisonous to pets. It also provides further information regarding symptoms and the degree of toxicity.
https://www.aspca.org/pet-care/animal-poison-control
https://www.aspca.org/pet-care/animal-poison-control