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Add Yahoo as a preferred source to see more of our stories on Google. An adult koala eats a eucalyptus leaf. Joeys can't break down the toxic, fibrous plants on their own yet. Photograph By David ...

While poop is decidedly not on the menu for us humans, it’s a normal food for many animals. In one study in Tanzania, scientists remarked that hooded vultures showed more interest in protein-rich lion ...

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 ...

Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet Initiative has ...

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