The ASPCA offers a database of toxic and non-toxic plants, with photos, to dogs, cats, and horses. You can see a list that affects only one of those three species, or view all of them.
This list contains plants that have been reported as having systemic effects on animals and/or intense effects on the gastrointestinal tract. Please note that the information contained in the ASPCA plant lists is not meant to be all-inclusive, but rather a compilation of the most frequently encountered plants. If you think that your animal is ill or may have ingested a poisonous substance, contact your local veterinarian or, for a fee, the ASPCA's 24-hour emergency poison hotline.
The ASPCA National Animal Poison Control is available 24 hours a day at 888-426-4435. Expect an initial consultation fee of around $100.00 and additional follow-up is at no charge. You will be assigned a case number your veterinarian can use to communicate with a toxicology specialist before beginning treatment.
If your pet has a HomeAgain microchip, a free poison control consultation is included in the full-service registration. Call 1-888-466-3242.
https://www.homeagain.com/our-services/emergency-medical-hotline
https://www.aspca.org/pet-care/animal-poison-control