The stag was often seen as the incarnate form of woodland Gods such as Cernunnos. White stags were considered to be from the Otherworld and, in myth, their appearance always heralded some profound change in the lives of those in the story. Considered in Celtic mythology to be among the oldest creatures in existence. Many Celtic myths involve dogs or dog familiars, which belonged to heroic figures or deities, and wars were often fought for and over them such as the one between Fionn MacCumhal and King Arthur. Examples of the importance of Celtic dogs are found in the myths of Gwyn Ap Nuad, Cuchulain, Amaethaon, and Taliesin.
Dogs are also the archetypal symbols of shapeshifters.
It is, of course, a creature of fire but is also related to the Power of the Land. Another word for Ley Lines is Dragon Lines. The whole Earth was viewed by the Druids as the body of the Dragon. Menhirs and stone Circles were located at great Power nodes. The Celts also called Dragons 'Fire Drakes'.