A fundamental constant is one that has to be measured by experiment, rather than being derived from any other quantities. Which values we choose to make fundamental and which ones are derived are somewhat arbitrary.
Koalas are native to southeastern and eastern Australia, living in forests of eucalyptus trees. They are basically sedentary animals that need to sleep a lot to give them time to digest their food. Being on the ground all the time would be a disadvantage, because predators could catch them easily.
Populations of koalas in New South Wales and Queensland are classified as vulnerable, but populations in other areas of Australia still thrive. Koalas are marsupials, most closely related to the wombat, and are native to Australia. They live in eucalyptus forests and feed on the leaves of the eucalyptus tree. Learn more about Marsupials