Over the past four decades, Doug, a resident of Tulsa, Oklahoma, acquired his collection of rhinoceros-horn libation cups at great personal cost, maxing out credit cards and curtailing vacations ...

New Caledonian crows and kea parrots can learn about the usefulness of objects by playing with them -- similar to human baby behavior. Researchers have discovered that New Caledonian crows and kea ...

While non-human animals (e.g. the bulls and horses depicted in the caves of Lascaux) have been subjects of art for tens of thousands of years, in the past few decades living animals have become not ...