SIMPLE questions often help us to understand problems better; and I think it indispensable, at the beginning of this work, to ask a question which appears simple in the extreme:"What is grazing?"The answer is generally as follows:"Causing grass to be eaten by an animal."That is correct! But here is another answer which, to my mind, is more realistic:"Causing the grass and the animal to meet."Since this book is almost exclusively concerned with grazing by cattle, I propose the following definition to the reader, requesting him to allow it to become well impressed upon his mind:Grazing is the meeting of cow and grass.It is by satisfying as far as possible the demands of both parties that we will arrive at a rational grazing, which will provide us with maximum productivity on the part of the grass while at the same time allowing the cow to give optimum performance.[From the Introduction]