Orangutans are the most intelligent of the great apes in tool use and problem solving. Zoo enrichment programs must match their exceptional cognitive capacity.
Orangutans without adequate cognitive enrichment develop stereotypic behaviors including repetitive swaying and object manipulation that indicate frustration of their intelligence. Their naturally solitary nature means that inappropriate social housing — too much forced proximity or too little company — both cause welfare problems. Enrichment programs must rotate novel challenges to prevent habituation. The exceptional memory and problem-solving capacity of orangutans means that they can learn to manipulate exhibit elements in ways zoos did not anticipate, requiring dynamic, responsive management. Staff who recognize individual orangutan cognitive styles and preferences provide the most effective individualized enrichment.