This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Tiangou (Chinese)
Tiangou in Chinese folklore that ate the moon or sun during an eclipse. Its name translates directly to “Heavenly Dog” and, in addition to eating celestial bodies, Tiangou was assigned the task of guarding the gates of heaven. Tiangou’s enormous size made him an obvious choice for the task; however, that same characteristic struck fear in the heart of humanity.He is often depicted aiming at the sky with his bow and arrow waiting for the black dog to appear.
Tiangou is not the only canine known for chasing and devouring celestial bodies — the Norse referenced a wolf (or wolves) that did the same (Hati, Skoll, and/or Fenrir). Within the Norse mythos, the wolves completed their task during Ragnarok, an event marking the destruction of the universe.