TO GO WITH AFP STORY BY ALEXANDRA LESIEUR -- A Cape vulture is pictured at the Johannesburg zoo on December 18, 2009. Rolled into a cigarette or inhaled as vapors, vulture brains can help at the horse races, boost an exam performance, or lure more clients to a business according to vendors of traditional medicines in South Africa, but the trend is blamed for killing off South Africa's vultures. AFP PHOTO / STEPHANE DE SAKUTIN (Photo credit should read STEPHANE DE SAKUTIN/AFP/Getty Images)