Streamer Maya explains why other monkeys are being “aggressive” to viral baby monkey Punch

Punch is a Japanese macaque born at Ichikawa City Zoo in July 2025. Sadly, his mother didn’t accept him, so zoo keepers raised him by hand. He became famous online when pictures showed him finding comfort in a stuffed orangutan.

![A learning agent operates within a self-referential loop where its policy [latex]\pi \in \Delta(A)[/latex] shapes its beliefs [latex]\Theta^{\*}(\pi)[/latex] through environmental interaction, and these beliefs, combined with a utility function [latex]u[/latex], determine optimal actions [latex]B(\mu)[/latex] that, in turn, redefine the policy, with Berk-Nash Rationalizability identifying stable behavioral equilibria within this dynamic.](https://arxiv.org/html/2602.17676v1/images/behavior_belief_utility_triangle.png)




