Koalas are marsupial mammals with its native and major population in Australia. They are mistaken to be belonging to the bear family, but they are not. Marsupials are the kind of living beings which have a pouch on their bellies to carry their younger ones like kangaroo.
Koalas are nocturnal animals living mostly on trees. Their common habitat is tall eucalyptus trees and they feed on their leaves. They have an unique digestive system which helps them to digest the eucalyptus leaves. These leaves does not contain many nutritional values and thus to save energy koalas sleep up to an average of 19 hours a day. They have strong legs with sharp claws making them good tree climbers.
They are stout looking creatures with long nose and grey fur over them. An averagely fully grown male koala weighs around 10 kg. The female koalas only give birth to a single baby in a year. The baby lives in its mothers pouch for over a year.
Koalas eat large amount of food compared to their weight. They spend over 2 to 3 hours of their daily time on munching those toxic eucalyptus leaves. They are certainly under extinction because of the deforestation.