What is Vasu Baras, the festival dedicated to worshipping cows?

Vasu Baras is a religious festival observed in Maharashtra and other western Indian states, dedicated to worship of cows and calves, symbolising motherhood, selflessness and nourishment. Also known as Govatsa Dwadashi, it will be celebrated on November 5. The festival falls one day before Dhanteras, on the 12th day (Dwadashi Tithi) of Krishna Paksha in the Hindu month of Kartik.