An eight-month-old female slender loris waits to be given her first health check by the veterinary team at London Zoo on July 21, 2011. Two female baby slender lorises, who are yet to be named, were given health checks, their sex determined and micro-chipped. Slender loris is the common name for the strepsirrhine primates who are nocturnal and originate from India, Sri Lanka, and southeast Asia. London Zoo supports conservation of lorises in Sri Lanka, where populations are thought to be under threat from deforestation. By Christopher Furlong/Getty Images.