Sambar deer
The critically endangered Siamese crocodile "Crocodylus siamensis" is reported to live in the park, along with the Asian elephant, gaur, dhole (the IUCN estimates fewer than 2,500 adults of this wild dog worldwide), leopard, Malayan sun bear, Asiatic black bear and white-handed gibbon. More common animals include the pig-tailed macaque, Sambar deer, barking deer and wild pig. Two notable endangered birds are the grey heron and purple heron, "Ardea cinerea" and "A. purpurea".