Kamadhenu is mother of all cattles on Earth. According to legends; Kamadhenu is a wish fulfilling cow who can do anything. She can create forests, feast.
She is also known as Surbhi.
As per the mythology, she is daughter of Kashyap Rishi and his wife Krodhavasa.
Surbhi meditated Lord Brahma for 10,000 years and got this status after that.
She resides in GoLoka which said to be the highest realm in universe, even higher than heaven.