I go against the first two threads on the plant subject. The website http://www.library.okstate.edu/Vetmed/about/ieatplants/plants.htm
gives a good discription of toxic plants to animals as well as pictures of what the plants look like for easy ID.
here is what they say about "Pothos".

Common Name: Devil’s Ivy , Pothos, Golden Pothos
Scientific Name: Epipremnum aureum
Family Name: Araceae
Toxic Principle: Allergic reactions, Oxalic acid, Entire plant, Proteolytic enzymes, Calcium oxalate crystals
Clinical Signs: Vomiting, Diarrhea, Redness and swelling, Dermatitis, Itching and burning of lips, tongue, mouth, also throat

PS they also give non toxic plants, check it out.