I mentioned that I had seen several lizards crawling about during my travels through Mali on the way to Timbuktu. I even had a photograph of one. I brought the picture in to the coffee shop yesterday and she identified it, with the help of a smart phone, as a Rainbow Agama or Agama agama to be scientific. Apparently it is a member of the iguana family of lizards.
The broken tail is likely the result of battles with other male lizards.