The collared brown lemur is known to occur naturally in only two national parks, Andohahela and Midongy du Sud, but has also been introduced into two private reserves, Kalambatritra Special Reserve and St. Luce Private Reserve (4). Captive bred populations also exist in institutions worldwide (5). The fate of the collared brown lemur will most probably be determined by the future of its forest habitat, which needs to be better preserved if the survival of this lemur is to be safeguarded.