I see rats every so often and all I see them do is block my path, so why not give them a use? I was thinking that nearby rats could have a slight chance to get into a food or seed-containing container and slowly degrade the food/seed quality within that container until it is destroyed. This whoever could be easily combated with basic rat traps, preferably made from sticks that would be placed within containers. Another, more effective way, would be to tame a wild cat and have it patrol your village killing rats like a fox would kill rabbits or chickens, virtually eliminating the need for traps.
Whenever you get 2 rats in one container, they could exponentially breed. This though, is the fun part. You could take that container filled with rats and empty it inside an enemy village if you want to cause some damage to your enemy but don't have the combat skills for it. 100s of rats is no match for cats or mouse traps, sabotage is awesome.
