In The Industrious Insects of the Grasslands, narrator Sir David Attenborough explains that around the world, over one-third of the grass that grows will be harvested by insects. Grass cutter ants harvest grass to feed underground fungus that they feed upon. Termites can digest grass, and they in turn become food for the giant anteater. After a prairie fire, termites and anteaters must wait for living roots to regenerate grass. This video is excerpted from BBC’s Planet Earth II, a breathtaking documentary series that highlights the natural wonders of our planet.