Loài khỉ này đang âm thầm tiến hóa vào Thời Kỳ Đồ Đá ở giai đoạn đầu tiên

Hunger seems to be the perfect environment for intelligence to emerge Using wood charcoal to detoxify Soaking hard foods in water to soften them then breaking open the shells with stones—these survival techniques aren't unique to humans In nature under the pressure of speech-related muscles some primate species are quietly evolving cognitively The island of Zanzibar covered by dense tropical vegetation is the home of the red monkey With abundant food sources they hardly have to worry about finding food Each day the lead animal needs only to guide the herd to fresh young plants to eat and they are all full Fruit flowers or young leaves are all enjoyed by them with great delight However to keep the entire group healthy eating only these is not enough Protein is an essential nutrient for growth The alpha male knows there is a type of tree in the forest that provides this vital nutrition for the entire herd It led the group up a tall mango tree where the young leaves contained up to 20% protein—exactly what they needed But this method comes at a cost Those leaves contain toxins in addition to protein Although not fatal consuming too much can cause discomfort Seeing the entire herd in agony the lead animal knew of a place where they could detoxify The ice block drifted through the dense forest and moved toward an area inhabited by people Here a pile of seemingly useless firewood suddenly caught its attention Based on previous experience after eating mango leaves just quickly chew on these small black pieces The discomfort in the stomach will noticeably subside In their struggle for survival red monkeys have inadvertently learned a new skill Due to differing environments each species develops skills suited to its own needs On a remote tropical island in the Americas A group of ring-tailed lemurs has entered their own Stone Age Unlike the red monkeys food is extremely scarce on this island To survive each morning they go to the shoreline searching for food In such a harsh place missing any opportunity could cost your life One day a fruit fell from the tree Inside the hard shell lies the fatty oil-rich kernel But breaking through this shell is no easy task and cannot be accomplished by strength alone Following the fruit they crossed through the forest to a clear stream the cradle of this species' wisdom On one occasion a few monkeys accidentally discovered that when fruits fell into the stream the current would gather them all in one spot After soaking in water the fruit becomes softer and easier to open They pick up a stone that fits comfortably in their hand place the fruit on another rock Then with a strong strike the outer layer instantly shattered Previously we believed only humans knew how to use stone tools But now it's clear that in nature thinking and learning aren't exclusive to humans Whether using a ladder to detox or smashing the fruit with a stone that's not an innate skill It was hunger itself that drove living creatures to constantly explore and exploration always yields results Those complex survival skills are the result of countless trials and errors they've endured Thank you for watching the entire video Don't forget to follow the channel for more fascinating nature videos