Most primates don't do a whole lot with their hands that's different than say what birds do with their beaks. Chimps are not building iPhones out there. Intelli

Most primates don't do a whole lot with their hands that's different than say what birds do with their beaks. Chimps are not building iPhones out there. Intelligence is also needed to plan, and notice & remember patterns of food & threats. Those don't necessarily involve hands.