There are no medium-sized trees in the deep forest. There are only the towering ones, whose canopy spreads across the sky. Below, in the gloom, there's light for nothing but mosses and ferns. But when a giant falls, leaving a little space ... then there's a race - between the trees on either side, who want to spread out, and the seedlings below, who race to grow up. Sometimes, you can make your own space.
Terry PratchettEveryone knew there were wolves in the mountains, but they seldom came near the village-the modern wolves were the offspring of ancestors that had survived because they had learned that human meat had sharp edges.
Terry Pratchett