South Africa has a stable government that makes wildlife protection a high priority. But even in that country, there's been a dramatic surge in poaching, particularly for rhinos.
A decade ago, fewer than 100 rhinos were killed in a year. Last year, it was more than 1,000, says Dan Ashe, director of the U.S. Fish and Wildlife Service.
"When you're talking about something that is more valuable than gold, and it is easily accessible, you're going to create the atmosphere where people are going to take advantage of that," he says.