What is endemic mammal means?

Endemic mammals are animal species that are exclusive to a defined geographic area or biogeographic region. Such species have ranges restricted to specific continents, countries, islands, or even smaller locations like forests or lakes. These mammals do not naturally occur anywhere else in the world outside of their designated habitats. Examples include Australia's koala, found only in that country, and Madagascar's aye-aye, limited to the forests of Madagascar. Endemic mammals have developed and adapted over an extended period within their unique environments, often evolving distinctive characteristics that distinguish them from closely related species or populations elsewhere. These species form significant components of regional biodiversity and ecosystems.