Ah, I possibly overreacted a bit.Unless your tort ate the entire plant I'm sure he'll be ok. Our Sully seeks this out regardless of how much grass, weeds, dandelions or hay that he's had. Never an issue. Tort table says toxic to mammals, unclear on reptilies. From my experience, no hsrm to torts. BUT, I'll make sure no more nibbling...
Could you please tell me what lizard that is? Just curious. Iguana?That plant is "pothos" - Epipremnum aureum , not a Philodendron. They are not really dangerously toxic, and have very little of the oxalic acid crystals that are worrisome.
Pothos is widely used in animal environments and few problems have been documented. One lizard feeds almost exclusively on this in the wild.