Pang Sida National Park is a composite of high mountains and fertile land, with an abundance of varied flora and fauna. The panoply of green cover consists of moist evergreen forest, dry evergreen forest, dipterocarp forest and grasslands, criss-crossed by streams and waterways. This jungle is home to wildlife such as barking deer, red gaur, elephants, tigers, bears, warthogs as well as hornbills. White-water crocodiles were also found in the area of Huay Nam Yen forest in 1991. This forest is estimated to be the largest and last habitat of crocodiles in Thailand, not including, of course, the various croc-farms where the reptiles are bred for their hide.