I do not understand why chameleon keepers think Pothos is a safe plant for their chameleons, especially for Veileds that often eat plants.
Pothos is listed as poisonous to dogs, cats, birds and people. Why would chameleons be different?
I asked my avian vet (who also has a large reptile practice) about the discrepancy between the safe/toxic-plant lists on Chameleon-keepers' web sites and the rest of the poison lists for children, dogs, cats and birds. Every other poison list has Pothos as toxic. He said that most animal poison lists are not well researched and really just extrapolations of other lists--plants that are known to cause a reaction to humans so they assume they cause a reaction to other animals. Some plants listed on the poison list are there because they cause a very mild skin irritation, but that is not the case for Pothos which is listed as causing vomiting and sometimes difficulty breathing.
While everyone else's chameleon might never take a bite out of a Pothos, my male veiled believes his true calling in life was to be an iguana. My vet does not want me to take a chance.