What does the adult koala eat?

Koalas are herbivorous, living almost exclusively on eucalyptus leaves. Their name is derived from an aboriginal word roughly meaning "doesn't drink". Koalas receive most of the water they need from the eucalyptus leaves, although they have been observed drinking water as well.

While there are hundreds of different eucalyptus species in Australia, koalas eat from only about 60 of the species, consuming between 400 grams and 600 grams of eucalyptus leaves every day. Koalas will not eat all types of eucalyptus, feeding on just 14 species as their primary food source, specifically, the subgenus Symphyomyrphus. Preferred eucalyptus species vary depending on their locality, so that the species eaten by Victoria koalas will be different to those eaten by north Queensland koalas. Koalas have been known to also eat the buds, flowers and bark of these particular species, while dirt also seems to supplement mineral deficiencies. Koalas have been seen feeding in eucalypt trees such as Manna Gum, Swamp Gum, Blue Gum, Forest Red Gum and Grey Gum.
Koalas are herbivorous, living almost exclusively on eucalyptus leaves. Their name is derived from an aboriginal word roughly meaning "doesn't drink". Koalas receive most of the water they need from the eucalyptus leaves, although they have been observed drinking water as well.

While there are hundreds of different eucalyptus species in Australia, koalas eat from only about 60 of the species, consuming between 400 grams and 600 grams of eucalyptus leaves every day. Koalas will not eat all types of eucalyptus, feeding on just 14 species as their primary food source, specifically, the subgenus Symphyomyrphus. Preferred eucalyptus species vary depending on their locality, so that the species eaten by Victoria koalas will be different to those eaten by north Queensland koalas. Koalas have been known to also eat the buds, flowers and bark of these particular species, while dirt also seems to supplement mineral deficiencies. Koalas have been seen feeding in eucalypt trees such as Manna Gum, Swamp Gum, Blue Gum, Forest Red Gum and Grey Gum.