Memory:Giant lizard

A huge green lizard, about the size of a dog and twice as long, is sitting in this room. It eyes you lazily but warily, flexing jaws that might be suitable for swallowing smaller creatures whole, or for ripping meat from your bones. If it let you, you could probably ride on it. Unfortunately, it seems more interested in eating you, and looking at the strong clawed legs, the broad swishing tail and the powerful jaws you feel that it won't be easy to convince it to leave you alone.