Hey recently returned to the game. Added a load of mods and the first game I started has got a red zoning or boxes following the wild animals around, sorta like if it were a developer mode feature but I can't find a way to turn it off, and I can't remember reading it as a feature in the mod threads.
I would assume it has something to do better pathfinding or path avoidance mods, and I have the latest of available mods.
Save and output attached
Edit: Seems to indicate wild animals' paths, with some blues and greens around the pawns.
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It was actually the wild animal early warning mod that seems to have been at fault.