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 ...

Feces don’t get enough credit as food. The stinky stuff is not just an end product after food gets eaten, digested and finally discarded by animal guts. Poop can also be something nutritious, useful ...

Researchers have discovered that a variety of animals, from spotted deer to rhesus monkeys and peafowl, are attracted to and consume rhino excrement in Nepal’s Chitwan and Shuklaphanta national parks.

Biologists and ecologists have long wished to gather high-quality data on exactly what the animals they study are eating, but how can such observations be made without disturbing the natural patterns ...