The article focuses on the need of conservation of endangered slender loris. The Indian Wildlife Act has classified the slender loris as highly endangered species. According to a population survey of the slender Loris, which was conducted in the scrubs of Pentanus facicularis on the Kuzhithurai river bank of Kanayakumari District, Tamil Nadu, India, a reasonable number of slender lorises were killed for medical use by the tribal people.