Bhairava is the strong and angry manifestation of Shiva. Bhairava is one of the most importent gods in Nepal and a lot of temples are dedicated to him. Bairava can be seen with a dog who is his vehicle (vahana).
There are eight different manifestations on Bharaiva: Kala Bhairava, Asitanga Bhairava, Samhara Bhairava, Ruru Bhairava, Krodha Bhairava, Kapala Bhairava, Rudra Bhirava and Unmatta Bhairava.
The buddhist version of Bhairava is called Mahakala.