User blog comment:D2r/Unanswered Questions of Redwall/@comment-1428497-20100131000305

5. Redwall is almost totally self-sufficient, and what they don't have, they get from Mossflower woods. As for all the others, They don't usually live in numbers big enough to NOT be able to live off the land. They wouldn't necessarily need to trade that much if any

9. if you want to know where all the vermin come from you might as well ask where all the woodlanders came from. There's just as many of them as there are vermin

11. They might not have been able to, or maybe they just didn't want to, or maybe they did before they moved to Southsward. Lotsa beasts didn't have kids, why just pick on Foxwolf and Silvamord?

Aren't there some cows mentioned in Redwall too? Something about the rats of Cluny's horde starting a stampede? Where did they come from and where did they go?