Humans pride ourselves on our ability to make plans for the future. But it turns out that we're not the only animals who think ahead. Scientists have observed wild orangutans planning their travel routes a day in advance, and communicating their itinerary to community members.
In the last decade, research has begun to show that some large-brained animals have the ability to plan for future needs — at least in captivity. The most famous example of this comes from Santino, the dominant male chimpanzee at Furuvik Zoo in Sweden. Zoo officials found that in the morning, before the zoo opened up, Santino would collect and cache stones from an adjacent waterbed. Later in the day, he would use those stashed stones as ammunition against zoo visitors. Last year, scientists also discovered that Santino hides his stone caches behind logs and rocks, and under small mounds of hay he creates.