Nearly everywhere cattle can graze, you can grow other crops. As a percentage of all livestock land usage, there is not much chicken, goat, or pig grazing left

Nearly everywhere cattle can graze, you can grow other crops. As a percentage of all livestock land usage, there is not much chicken, goat, or pig grazing left in the world. It is true most other livestock CAN utilize land that can't be used efficiently for other forms of agriculture. In practice, less so.