Pack horses are often used to haul people and their gear down the eight mile trail to Supai Village in the Grand Canyon. Recently, The Havasupai Tribe has drawn criticism for the alleged abuse and neglect of the horses, as reported by tourists and animal rights groups. Kellye Pinkleton is the Arizona State Director at the Humane Society of the United States. After hearing about the allegations, she led a group of volunteer veterinarians to the village last month to check up on the horses, and work with the tribe. Pinkleton spoke with KNAU's Aaron Granillo.