Chimpanzees use different types of memory to find insects hidden underground, study finds

Chimpanzees are the animals with the most complex memory, apart from humans. They remember where and when ripe fruits are available, and use this information to decide which trees they will visit and even where they will sleep in order to eat these fruits first thing in the morning. However, the cognitive strategies they use to find foods of animal origin rather than plant origin are not yet well understood.