Manas River tiger, elephant, gaur ("Bos gaurus"), four rare species of golden langur ("Trachypithecus geei"), pygmy hog ("Sus salvanius"), hispid hare ("Caprolagus hispidus"), greater one-horned rhinoceros ("Rhinoceros unicornis") and wild Asiatic water buffalo ("Bubalus arnee"). There are 362 species of birds, out of which four species of hornbills (rufous-necked, wreathed, pied and great Indian) have been recorded. Apart from the Ganges river dolphin ("Platanista gangetica") other aquan species identified in the river are the deep bodied mahseer ("Tor tor"), golden mahseer ("Tor putitora"), and chocolate mahseer or katle ("Acrossocheilus hexangonolepis"). Five thousand people live within the park limits in several villages. Tigers,
Zoo Tycoon 2: Endangered Species 3D. "Endangered Species" contains 20 brand new animals from various countries and habitats. The expansion focuses on endangered and critically endangered animals like the Orangutan, Javan rhinoceros, Florida panther, and Giant sable antelope. However, other animals are included that are 'lower risk' and 'vulnerable' as well. "Zoo Tycoon 2"'s first expansion, "Endangered Species" updates most of the animal behaviors; basic herding behaviors were added (more advanced herding and pack behavior came out in "") and animals cannot breed with their siblings, parents or grandparents. Animal models and skins are also slightly more realistic than the animals from the original game.