The AI for Trico in the Last Guardian was amazing. From the way his animations adapt to the environment to all the little quirks that make him feel like a real animal. Yes, that includes the frustrating moments wherre he doesn't behave like you want him to. Like it or not, the developers have stated this is by design
I make game analyses on youtube:
FFVI: https://www.youtube.com/watch?v=mSO6n8kNCwk
Shadow of the Colossus: https://youtu.be/9kDBFGw6SXQ
Silent Hill 2: https://youtu.be/BwISCik3Njc
BotW: https://youtu.be/4auqRSAWYKU