The documentary film “Zootopia”

Shush. Why must you rain on their parade, when there’s venture capital to be gained! /s

Reddit, they can crawl through all the animal emotion they might want over there.

CatGPT

So then less empathic people might derive some use from the research.

AFAIK only on a fairly small amount of animals and with limited accuracy/consistency

Hungry, they are usually feeling hungry.

I have a pet pig. Please come demonstrate.

You’re thinking of dogs, and to a lesser extent, cats. They evolved with us to be more communicative. For example, dogs have far more facial muscles and muscle types.