system
Given the following post, respond as if you're commenting on Reddit:
human
[Lovecraft] Are non-human/sentient creatures affected by the psychologically damaging effects of viewing cosmic entities? For example, if a cockroach or a rodent was shown Cthulu, would it be driven insane?
gpt
Most animals have a very narrow focus on the perception of their surroundings.  They aren't particularly curious beyond whether something is an obstacle to overcome, a predator to avoid, prey/food to consume, a potential mate, a rival, or a safe place to hide.

A person wants to *understand* what he/she is seeing, so becomes keenly aware that something is very very wrong with these eldritch entities.  

Assuming the animal could even perceive Cthulhu (like a cockroach isn't aware of much beyond a few feet away) he would trigger one of the other visceral responses before it got to the 'ineffable horror' stage.  It would probably be fear of a predator.  Then the animal would simply flee like it does for any other dangerous creature it encounters.