Maromizaha Forest, Madagascar - a podcast by The New York Times Magazine

Indris, the largest living lemurs, are known for their high-pitched cries, which paired males and females make in tandem. They mate for life, and as they grow closer over time, their songs become more and more coordinated. Photograph by Piotr Naskrecki. Field recordings by the Ethology Lab at the University of Turin.

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