Tubulidentata are characterised by their teeth which lack a pulp cavity and form thin tubes which are continuously worn down and replaced.
The hyraxes are any of four species of fairly small, thickset, herbivorous mammals in the order Hyracoidea.
About the size of a domestic cat they are well-furred, with rounded bodies and a stumpy tail.
The order Primates contains humans and their closest relatives: lemurs, lorisoids, tarsiers, monkeys, and apes.
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.