Kamdhenu, the divine cow, which lives in swargalok (heaven), emerged from the ocean of milk (kshira-sagar) at the time of samudra-manthan.

Kamdhenu, the divine cow, which lives in swargalok (heaven), emerged from the ocean of milk (kshira-sagar) at the time of samudra-manthan. It was presented to the seven sages by the Gods, and in course of time came into the possession of Sage Vasishta. 

Kamadhenu provides her owner whatever he desires and is often portrayed as the mother of other cattle as well as the eleven Rudras.