Karl Ammann / Male mandrill portrait (Mandrillus sphinx), Central Africa.

Karl Ammann / Moustached monkey portrait (Cercopithecus cephus), Central Africa.

Karl Ammann / Hippopotamus and calf {Hippopotamus amphibius} Virunga NP, Democratic Republic of Congo.

Karl Ammann / Depressed Orang utan in Tapei zoo, Taiwan

Karl Ammann / Orang utan baby 'kissing' mother, Borneo

Karl Ammann / Silhouette of African elephants at sunset {Loxodonta africana} Kenya

Karl Ammann / African elephant portrait in grass {Loxodonta africana} with Egret, Kenya

Karl Ammann / African elephant herd walking {Loxodonta africana} Amboseli, Kenya

Karl Ammann / African elephants crossing river {Loxodonta africana} with Giraffes in forest behind. Kenya

Karl Ammann / Silhouette of African elephants in heat haze {Loxodonta africana} Amboseli,

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

Karl Ammann / Hunter with smoked carcass of silverback Gorilla {Gorilla gorilla} for food, Cameroon