An adult koala eats a eucalyptus leaf. Joeys can't break down the toxic, fibrous plants on their own yet. Photograph By David Marks/National Geographic When it’s time to feed the kids, koala moms do ...

A highly specialized diet combined with rampant sexually transmitted infections are threatening Australia's cuddly emblematic marsupial. Habitat destruction and human encroachment have lowered numbers ...

While the tree-hugging koalas are generally cute, nothing spells adorable than seeing them getting plenty of rubs and tickles. Meet Harry, the baby koala that is currently the media darling of Symbio ...