This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Tatsu (Japanese)
Tatsu, Japanese dragons, are similar in appearance to the dragons of China and the rest of the world. They have long, scaled bodies, serpentine tails, sharp teeth and claws, and often have horns, antlers, spines, and beards. Some tatsu have multiple limbs or heads. Many disguise themselves as humans and are never seen in their natural forms.
Behavior: Tatsu are strongly connected to water—be it rain, rivers, seas, or oceans—and are considered to be water gods. They live in splendid palaces at the bottom of deep seas, or in other secluded places. They usually live far from human-inhabited areas, but occasionally make their homes near Buddhist temples.