From the description of Prax, huge areas are covered by dry grasses. That means there is a lot of dry vegetation that accumulates whenever seasonal humidity initiates another spurt of growth, only to be dried out if not grazed upon in time. What happens to this excess, dry stuff?
I remember a statistic that more than 80% of the biomass of a steppe or savannah is consumed by termites in our world (which in turn serve as food to creatures like the aardvark). Is that true in Prax, too? (And if so, are termite hills a mainstay in the diet of herd men?)