To survive, animals compete for resources, be it food, mating partners or territory. But a ground breaking recent study shows chimpanzees and gorillas form friendships, some lasting at least 20 years. They play, eat and socialise together.
It is the first study of its kind to see such long-term, peaceful associations between apes. A team of scientists led by Crickette Sanz from Washington University, US, made this discovery using over 20 years of data from the Nouabalé-Ndoki National Park in the Republic of Congo.
