Although published some ten years ago, this video explains in clear terms how grasslands and livestock benefit from each other.
The information also complements the concept of regenerative agriculture that is becoming more prevalent in the United States. It is replacing deep tilling and destroying topsoil as well as the creatures that live and depend on it by spraying with chemical fertilizers.
This is real environmental education which will be vital if the world is to feed 9.5 billion people as predicted for 2050.
The video is just over 3 minutes: