This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Vahana (Hindu)
Vahana denotes the being, typically an animal or mythical entity, a particular Hindu deity is said to use as a vehicle. In this capacity, the vahana is often called the deity's "mount". Upon the partnership between the deity and his vahana is woven much iconography and Hindu theology.
The vahana accompanies, pulls the chariot of, or serves as the seat or mount of his god. Images of the vahana are also used on banners and emblems to identify the god or the cult affiliation of the devotee. The vahanas of the major gods, such as Shiva’s bull Nandi and Vishnu’s eagle Garuda, have a considerable mythology of their own.