The oldest living koala in captivity is eighteen years old. A koala's favorite food is eucalyptus leaves. Koalas are observed most often in the daytime. The koala's diet of eucalyptus leaves has a strange drugging effect on them. This makes the koala appear loving and cuddly.
Koalas also eat leaves, buds, and bark off the native golden tree.
They can't just eat any kind of leaves or bark or they may die. Koalas spend about 5 hours eating every night, consuming between 500 grams and 1 kilogram in food. Koalas don't drink that much water because they get most of their liquids from the eucalyptus leaves. The koala's biggest enemies are the large python, the wedged tail eagle, the powerful owl, and the dingo. The large python hunt the koala on the ground and in the trees.