Abstract: The habitat preference of large and medium sized mammals the Parmikulam Wild life sanctuaries were studied. Twenty-four species were recorded. Most prefer to live in the specific forest types. In the case of primates Macaca radiata was more abundant in forest plantations and in the deciduous forests. Macaca silenus was confined to the evergreen forests alone. Presbytis johni was more or less evenly distributed between the westcoast tropical carnivores were abundant in grassland and in the Tectona grandis plantations