AI seeks/avoid cramped places

[giannikampa]

It looks one step away, because the game already calculates cramped spots.
They could simpley count more or less as walk cost to give AI to animals/creatures. Or maybe some genuine other ways are in your mind.
I think of the actual animals and at non existings, like:

A creature that does not eat for food but for healt so it never starve and wonders non aggressive, in cramped spots,
Classified insect,
It should look as a cave fauna, randomly goes for eating flesh in a radius (meals, raw meet, corpses, living), then "seek for cramped"
    All things already in game! except for the insect

Existing animal AI could avoid cramped so won't go deep in caves when they are wandering, but they are great already because they seek for food so..

Berserk could "seek for non cramped"