Also known as Kokila. A rat, who is a character in Bidalopakhyana, the story that Narada once narrated to Dhritarashtra. Once a cat stood on the banks of the Ganga, with both arms outstretched and began meditating. After some time had elapsed, the birds and rats began trusting him and made him their leader. The cat, however, secretly ate a rat everyday. The cat became stronger and the rats became fewer in number. Kolika was a smart rat who finally figured out what the cat was up to, and escaped with his friends, as per Mahabharata Udyogaparva Chapter 160.