The terrain of Dudhwa National Park holds varieties of flora such as Mosaic grassland, dense Sal and Swampy marshes. Tall coarse grass sometimes forming impenetrable thickets, swampy depressions and lakes characterize the wetlands of the Park. These are the habitat of large numbers of barasingha, the magnificent swamp deer, noted for their multi-tined antlers (bara-12, singha-horn). These in turn support the predators - the tiger and leopard. Though the Park has a fair population of tigers, but it is difficult to trek them due to thick vegetation.