Chimpanzees in the Republic of Congo's pristine Goualougo Triangle forest have received a conservation boost.
The central African country has extended protection of the Nouabale-Ndoki National Park by over 100-square miles.
In partnership with the Wildlife Conservation Society (WCS) and a Congolese logging company, the government hope to prevent hunting and promote future study.
Wildlife Conservation Society studies in the Goualougo Triangle has revealed that chimps use a short stick to perforate a termite mound and a long stick to extract the insects for consumption.
The dense swamp forest habitat is home to hundreds of chimpanzees, say conservationists.
Many of the chimps show a curiosity towards their human investigators.
WCS first reported the ape population back in 1989.