The lizards around my place tend to have short stumpy tails, or none at all, owing to the attentions of my cats. This one however has a good long one. It came to inspect my collection of flowerpot saucers yesterday.
Careful inspection reveals that this lizard is quite tubby around the middle, so I suspect it is a pregnant female. They are called "Green Lizards" in France ("Lézard Vert"), they lay eggs, eat slugs and snails, and live to about 8 years.