This is Master Tyrannosaurus Stelio –the “crocodile” of Ikaria, Mykonos and other islands. The biggest I have seen was about 45 cm long. It makes a claka-laka-clak when walking. Master Stelio can run very fast. Then it makes chiki-chiki-chiki-chak. Stelios eat flies. Far back in the Jurassic period their big ancestors may have been eating flies too. I don’t want to know how big the flies were in those times.

In Ikaria they call them “korkofilas” which is a corruption of the ancient Greek word “krokodilos” –the crocodile. People think that it’s because they look like crocodiles. This is the story:

«The crocodile gets its name from the Greeks who observed them in the Nile river. The Greeks called them krokodilos, a compound word from kroke, which means «pebbles» and drilos, which means «worm». To the Greeks, this «worm of the stones» was so named because of the crocodiles habit of basking in the sun on gravel-covered river banks.»
http://en.wikipedia.org/wiki/Crocodile

«Όταν οι Ιωνες έφτασαν στην Αίγυπτο, συνέκριναν τη μορφή των αληθινών κροκοδείλων (που ως τότε ονομάζονταν «χαμψαι») μ’ εκείνη των σαυρών της πατρίδας τους και τους έδωσαν το ίδιο όνομα όπως αναφέρει ο Ηρόδοτος: «καλέονται δε ού κροκόδειλοι αλλά χάμψαι, κροκοδείλους δε Ιωνες ωνόμασαν, εικάζοντες αυτών τα είδεα τοίσι παρά σφίσι γινομένοισι κροκοδείλοισι τοίσι εν τήσι αιμαστήσι». Η ονομασία «κροκόδειλος χερσαίος» είναι προγενέστερη της απόδοσης της ονομασίας «κροκόδειλος» στα μεγαλόσωμα ερπετά του Νείλου…»
http://www.mykonostour.gr/greek/mykonos_general_information/mykonos_animal.html