Researchers are training AI to interpret animal emotions

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.

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

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.