This is a list of the mammal species recorded in the Cocos (Keeling) Islands, a small Indian Ocean archipelago approximately midway between Australia and Sri Lanka.
There are two non-marine mammal species in the Cocos (Keeling) Islands, neither of which is believed to be threatened.
Species assessed using this system have the following instead of near threatened and least concern categories: The bats' most distinguishing feature is that their forelimbs are developed as wings, making them the only mammals capable of flight.
They are the mammals most fully adapted to aquatic life with a spindle-shaped nearly hairless body, protected by a thick layer of blubber, and forelimbs and tail modified to provide propulsion underwater.
The dugong is not a native species to the Cocos (Keeling) Islands, however, a solitary animal started to inhabit the southern lagoon in 2002.