If there were a super volcano eruption it could be several years before there were good amounts of food available.
I don't go down the route of really long term preps, because "hopefully" it won't happen in my life time.
As "preppers" should we not be preparing 9either physically or mentally) for the situation that is beyond the preps we have done so far?
The chickens would provide more protein though, and remember, a dog is not just for christmas, carefully jointed it can last till Easter