One of the most reclusive primates in the world, the Horton Plains slender loris has only been spotted four times since 1937. So rare were sightings that researchers thought the loris had gone extinct sometime between sightings in 1939 and 2002.
All species of slender loris are native to Sri Lanka and southern India. Deforestation has led to a decline in all populations and prompted a study of the nocturnal animals.
It was during this study the photograph of the male Horton Plains slender loris was taken.
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