He mentions a lot of different animals and explains that although they might seem like "brute neighbors", they live freely and the forest functions as a village. He mentions that otters grow to be as big as little boys, while birds build habitats in trees and mice are different from those in the city.
The connotation of narrow in the passage create a feeling of suffocation. Narrow means having a small distance from the one side to the other. This could be related to suffocation due to the small space.
That it is super frikin weird
