The Inca Empire owes much to the humble llama—and to the animal’s droppings. As a 2011 study of the fallen Andean civilization revealed, llama dung served as an essential fertilizer for the Incas’ ...

The remains of five llamas that may have been ritually sacrificed by Incas have been found in Peru. It isn’t clear how the animals were killed, but it may have been a slow death. “I have no way to ...