Krau Wildlife Reserve is the second largest wildlife reserve on Peninsular Malaysia and contains one of the largest remaining blocks of lowland forest. These lowland forests support a high diversity of animal species that are severely threatened due to forest clearance and disturbance. Of the original 6.5 million hectares of lowland forest, less than 800,000 ha still remains. 

	Krau Wildlife Reserve is a 60,349 ha protected area comprising lowland, riverine and montane forest. A total of 115 mammal species have been recorded in KWR including 17 carnivore species and 39 species of small mammals.
Krau Wildlife Reserve is an internationally renowned research site for field studies.Three study sites have been selected within the lowland and riverine forest: two at the edge of the reserve at Jenderak Selatan and Kuala Lompat and one site within the interior of the reserve at Lubuk Baung. Each site contains a network of trails and a 1km² study grid (with cross-trails cut at 100m intervals). An extensive plantation area borders the edge of the forest at Jenderak Selatan. Two large rivers surround the forest at Kuala Lompat.