When I was much younger, we had a donkey that had a breach birth, and the foal became stuck. It was awful, in every sense of the word. The foal ended up dying mid-birth, and we then did everything we could to save the mother. To the point where we were had a chain wrapped around the dead foal for pulling, and we had to cut up and break its bones to get it out.
We eventually saved the mother, but that donkey was truly scarred. For about two years, I would of said that donkey was clinically depressed. It really changed my perspective on just how intelligent animals actually are, and I’m sure they feel complex emotions just like us.