On March 4 2019, we celebrate Mahashivaratri, the worship of Lord Shiva. Lord Shiva is also known as Pashupati. Pashu means animal and pasha means a noose or something with which you bind another. Pati means the Lord. Why is the Lord called Pashupati? A pashu or an animal bound by a pasha or a rope, is confined to a limited space and dependent on the food and drink that are provided by someone and has limited knowledge. An animal that is not bound by the pasha enjoys its freedom, is free to roam about and eat the green grass and drink water from natural sources, breathes pure air and is much happier.