Raisin logs are a fun treat, especially for Jamie who gets to exercise her tool-using ability. We drill holes in logs and then stuff raisins into the holes so the chimps have to work to get them out. Jamie also gets to exercise her hoarding tendencies – check out the pile that she gathered by her feet.
Chimps are famous for their ability to use tools, but its not just a means to an end for them – most chimps truly enjoy the process.
