Reminds me a lot of the creature known as the Tarasque, a monster from French folklore I think, has a very similar appearance to what you drew and ironically, the Pokémon Tyranitar apparently takes inspiration from that creature, not appearance wise I don't think but nature wise as, the Tarasque was so powerful, it could destroy and alter entire landscapes and T.Tar's entries say the same thing of how maps have to be redrawn because Tyranitar either destroy entire forests or destroy entire mountain ranges