your dead right about rabbits lean grazing does make a difference in size as they are limited to how far they can travel ive seen some humongus hares to i live near an experimental farm where they grow different types of crops one hare was taken their by a bunch of kids was a monster but they didnt get to keep it as word got out and the ministry men came and took it i know all the hares round their are a couple of pound heavier than normal but this one was unreal