An awful lot of people come here and look for information on poison plants. I can’t tell if they are looking to do in a significant other or if they have become paranoid about the plants talking and are concerned the plants will try to do them in? ( Have you been taking good care of your houseplants? )
I’ve only had one problem with pets and houseplants. I had a lab who ate every house plant I brought home. Then he ate a 1 foot tall very spiny cactus. It was the last houseplant he ate. He was fine in a day or two. ( Only a lab wouldn’t stop after the first bite of spines and cactus. )
GLP Poisonous Plants has a huge list of links to several houseplant databases about toxic houseplants.
The reason I haven’t covered toxic plants in detail is because there is a great deal of conflicting information on the net about which plants are toxic. So I hesitate to give out information that may be inaccurate. When in doubt the Extension Office or .edu website is far more likely to have correct information than a .com/.org/.net website.
And, of course, don’t eat your houseplants.
Recommended sources for information on toxic plants:
Toxic Houseplants, ( Army ) has an extensive list with tons of detailed information.
Utah Poison Control Center Poisonous Plant Guide has an extensive list with photos.