Close up of the head of a slow worm Anguis fragilis against a black background. This limbless lizard is a protected species in UK. One of the features that distinguishes it as a lizard is the fact that it has eyelids and can blink snakes cannot. See images B6TB09 and B6TH69 for illustrations of a slow worm blinking.
Location: Cwmisfael, Carmarthenshire, Wales, UK