activities. The waterways turn from trickles at their sources to raging water columns in mid-course, to gentle meandering wide streams in the lowlands. Along these waterways lie mineral licks and wallows fed by smaller forest streams where a plethora of fauna including Fea's barking deer, Tapir, Asian elephant come to feed. Tiger, Asiatic leopard, and wild dog lurk along trails leading to the mineral licks waiting for these prey species to emerge in the dead of night. Endangered Siamese crocodile nest along the banks of the Petchburi River. The Banded leaf monkey is also commonly seen.
Spanning altitudes ranging from 300 to 1,513m, Kaeng Krachan hosts a diversity of vegetation and is home to a rich bird fauna. Over 400 species are recorded, including the rare Ratchet-tailed treepie, found nowhere else in Thailand. Yellow-vented and White-bellied Pigeons, Grey Peacock Pheasant, six species of hornbill and seven kinds of broadbill are also present.