Comment by Earw0rm
I share your surprise regarding LLM, is it fair to say that it's because language - especially formalised, written language - is a self-describing system.
A machine can infer the right (or expected) answer based on data, I'm not sure that the same is true for how living things navigate the physical world - the "right" answer, such as one exists for your squirrel, is arguably Darwinian: "whatever keeps the little guy alive today".