There are over well over one billion cows in the world.Cattle are herbivores that eat vegetation such as grass.Cattle are sacred to India.There are an estimated 300 million cattle in India.Young cattle are generally known as calves.Adult female cattle are generally known as  cows.Adult male cattle that are not castrated are generally called bulls.Cattle are red/green are colour blind.In the sometimes controversial sport of bull fighting, bulls are angered by the movement of the cape rather than its red.Meat from a adult cattle is known as beef.Meat from a calve is known as veal.Cattle trained to be draft animals are known as oxen (ox).