Shiva
The hymn 10.92 of the Rigveda states that deity Rudra has two natures, one wild and cruel (Rudra), another that is kind and tranquil (Shiva). The Vedic texts do not mention bull or any animal as the transport vehicle (vahana) of Rudra or other deities. However, post-Vedic texts such as the Mahabharata and the Puranas state the Nandi bull, the Indian zebu, in particular, as the vehicle of Rudra and of Shiva, thereby unmistakably linking them as same.