The Arassas hails from the folklore of Lagrand in the Hautes-Alpes region of France. It is a greyish-colored animal with the head of a cat and the body of a lizard. It lives in ruined houses and old crumbling walls. Its gaze kills immediately.
Like other European mountain dragons, it is likely derived from superstitions about otters and martens.
References
van Gennep, A. (1948) Le folklore des Hautes-Alpes, Tome II. J. P. Maisonneuve et Cie, Paris.