Koalas have brownish-grey or silver-grey fur, and a big pink and/or black nose. They have sharp claws which help them to climb. They can hear and smell very well, but they cannot see very well at all.
Koalas are mostly active at night. They live in trees, and they do not like to be on the ground. They mostly eat leaves, bark and fruit of some Eucalyptus trees. Koalas do not drink often, they get most of their water from the leaves they eat.