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,
Endangered Species Act of 1969 passed prior to the 1969 act, and set up a list of species native to the United States that qualified as endangered. The animals on this list were then afforded certain protections from the National Wildlife Refuge System. For example, the Endangered Species Preservation Act was in part dedicated to raising awareness of endangered species of birds like the peregrine falcon, and to "conserve, protect, restore, and propagate certain species of native fish and wildlife". Despite these protections, however, researchers found that the act was insufficient. This led to the passage of the Endangered Species Conservation Act of 1969. The