At middle and higher elevations in the forest, two major watersheds fed by the  Petchaburi and Pranburi Rivers support wildlife. In the lowlands beyond the forest, they  sustain agricultural 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