Nguyen Huong Giang grinds rhinoceros horn with water at her apartment in Hanoi, demonstrating how she prepares a concoction she ingests after drinking too much alcohol or when suffering from allergies. Rhinos are kept in a private zoo in Hanoi (below) under constant security. (Associated Press)

Nguyen Huong Giang grinds rhinoceros horn with water at her apartment in Hanoi, demonstrating how she prepares a concoction she ingests after drinking too much alcohol or when suffering from allergies. Rhinos are kept in a private zoo in Hanoi (below) under constant security. (Associated Press)