Karl Ammann / Young Chimpanzees using grass stems to extract termites from mound {Pan troglodytes} in sanctuary, Kenya

Karl Ammann / Young Chimpanzees 'kissing' {Pan troglodytes} Chimfunshi sanctuary, Zambia

Karl Ammann / Bonobo family mutual grooming, Wamba, Zaire

Karl Ammann / Olive baboon mother with young {Papio anubis} Samburu Reserve, Kenya

Karl Ammann / Male Chimpanzee with padlock and key. {Pan troglodytes} sanctuary, Kenya

Karl Ammann / Chimpanzee wading to feeding boat. {Pan troglodytes} captive Brazzaville sanctuary, Congo

Karl Ammann / Bonobo juvenile {Pan paniscus} Congo

Karl Ammann / Bonobo orphan laughing {Pan paniscus} Brazzaville, Congo

Karl Ammann / Orphaned Chimpanzees 'kissing' {Pan troglodytes} Chimfunshi sanctuary, Zambia

Karl Ammann / Frustrated male Chimpanzee {Pan troglodytes} Chimfunshi sanctuary, Zambia

Karl Ammann / Bonobo juvenile orphan {Pan paniscus} Kinshasha, Congo

Karl Ammann / Chimpanzees family group grooming, Gombe, Tanzania