 There are 288 species of terrestrial mammals in Borneo which is dominated by the chiroptera (102 species of bats) and rodentia (61 species of rats and mice), and 44 species are endemic to the island.There have also been 91 species of marine mammals recorded within the territorial boundaries of Malaysia, Indonesia and Brunei.With the rapid and massive deforestation in Borneo and resulting destruction of habitats many species are endangered, such as the Bornean orangutan, or critically endangered, such as the Borneo elephant.