Justified: The story is intended to be from the point of view of the rabbits and squirrels, and as they don't want to be eaten, they would view predators as villains. The story is meant to explore what life would be like for a creature who is frequently preyed on by other animals.
The wolves are the heroes, and the rabbits and squirrels are the villains.
Combine with "Exaggerated"! And you get: A Five-Man Band of a Lion a wolf, a Hawk, a Tiger, and a human fight a Five-Bad Band of a Cow a Squirrel, a Rhino, a Donkey and a Deer.
Subverted: The wolves are actually quite pleasant and friendly.
Double Subverted: ...Until they rip your throat out.
Parodied: The heroes are talking plants and the villains are ravenous herbivores.
Alternately: Then, the rabbits and squirrels work to solve the population problem by executing some and take up farming to ensure there is food for everyone. Others wish for the 'good old days' when they only had to worry about the wolves instead of each other and bring the wolves back. This results in a newer more complex system with a variety of factions on both sides, none of which are truly evil or truly good.