Small green chameleon with pronounced ridge on back, crossing the foot path to my office and nearly stepped on by passers-by so I scooped it up and transferred to to a nearby Balanites aegptica tree, where it quickly (for a chameleon) climbed up and out of harm's way. It got a bit flustered by the attention and started getting purplish-red spots, but was soon safe in a bunch of green thorns.