researchers are aware that chimps have worked comparable equipment in the ages , but it was not fully known if the devices they employed were manufactured specifically for the task of harvesting the insects . of all the tools the chimps leave untouched and enrique ' s team reconstructed , 80 % were designs made by their owners . roldan says the new study has determined that their methods have significantly evolved , proving previous hypotheses .
Chimps design tools to catch termites.