I was digging around wiki again and found this.
The Ecology of the Charr
It is a bit of a long read but some cool info.
Charr are carnivores; they do not feed on any sort of plants. They have no farms, and no need for agriculture or vegetation outside of what is needed for structures or technical uses. They herd roaming bands of beasts to feed the legions, assigning the task to young Charr or the wounded who can no longer fight.
