This is an automated archive made by the Lemmit Bot.

The original was posted on /r/todayilearned by /u/tyrion2024 on 2025-09-25 13:39:05+00:00.

Original Title: TIL “the first unambiguous evidence” of an animal other than humans making plans in one mental state for a future mental state occurred in 1997 when a chimpanzee was observed (over 50x) calmly gathering stones into caches of 3-8 each in order to later throw at zoo visitors while in an agitated state