First evidence of live-traded dogs for Maya ceremonies

Police detectives analyze isotopes in human hair to find out where a murder victim was born and grew up. Ashley Sharpe, an archaeologist at the Smithsonian Tropical Research Institute in Panama, and colleagues combined clues from carbon, nitrogen, oxygen and strontium isotope analysis discovering the earliest evidence that the Maya raised and traded dogs and other animals, probably for ceremonial use. "In Asia, Africa and Europe, animal management went hand-in-hand with the development of citi