Dusky Langur, ThailandThe dusky langur, also known as the spectacled leaf monkey, is a primate found in the forests of Southeast Asia. It gets its “spectacled” nickname from the pale rings around its eyes, giving it a perpetually wide-eyed expression. Infants are born bright orange, a color that gradually fades to the adult’s gray coat over the first few months of life. These langurs are primarily leaf-eaters, using specialized stomachs to digest tough foliage high in the canopy. This one was photographed in Khlong Saeng Wildlife Sanctuary in Thailand. Nikon D500 with Nikkor 200-400mm lens (at 400mm) ISO 800, f/4 at 1/200th of a second.