Evan MacLean (PhD, 2012) spends some quality time with a couple of juvenile bonobos at Lola Ya Bonobo, Democratic Republic of Congo. As these bonobos get older, they will be integrated into a mixed age, mixed sex group and will be free to roam vast expanses of nearby forest on their own.
MacLean’s doctoral research on the evolution of animal cognition involved a broad, phylogenetic comparative approach, of which bonobos were but a part.