2. Azalea
Also known as Ericaceae, and Rhododendron.
This flowering plant is poisonous to both cats and dogs, with mild to severe toxic reactions.
The Azalea is a member of the Rhododenron spp., which contain substances known as grayantoxins. Only a small amount is required to result in severe toxicity.
Ingestion can result in vomiting, abdominal pain, diarrhea, drooling, tremors, seizures, weakness, abnormal heart rate, and depression of the central nervous system.
With treatment, the effects can be minimized, but severe toxicity or non-treatment can result in coma and death from cardiovascular collapse.