Proboscis monkeys are the primate world’s most prolific swimmers ... The rampant clearing of the region’s rain forests for timber, settlement, and oil palm plantations has depleted huge ...

If you want to protect the world’s only grass-eating monkey, saving the grass is a good ... One morning Kerby and I picked our way through light rain down a steep, slick path to see Tasso ...

The world’s smallest monkey is called the pygmy marmoset ... The sky was gray, and rain pattered down through the leaves. Pygmy marmosets usually head to their feeding tree shortly after ...