front of the human being so the villagers no longer wore them for protection. All other means to prevent tiger attacks, such as providing the tigers with more prey by releasing captive bred pigs to the reserve's buffer zones, or placing electrified human dummies to teach tigers to associate attacking people with electric shock, did not work as well and tiger attacks continue. Many measures were thus discontinued due to lack of success. In captivity Tiger attacks have also happened in zoos and as exotic pets. Attacks by captive tigers are not that rare. Between 1998 and 2001 there were seven fatal tiger attacks in the United States and at least 20 more attacks that required emergency medical care. In 1985, a pair of Siberian tigers at the Bronx Zoo attacked and killed one of their keepers in an enclosure that was part of the Wild Asia exhibit. In 2003, trainer and performer Roy Horn was attacked by a Siberian white tiger during a live stage performance, disabling Horn and prompting the permanent closure of the show. In the first incident at the San Francisco Zoo, in 2006, a zookeeper was bitten on the arm during a public feeding. In the second incident in 2007, one person was killed and two others were injured before police officers intervened, shooting and killing Tatiana. In 2007, a 32-year-old Canadian woman was killed when she was outside the cage petting a tiger, it apparently grabbed her leg and mauled her; causing her to bleed to death. In 2005, a 17-year-old girl was killed by a captive Siberian tiger at the Lost Creek Animal Sanctuary in Kansas, while taking her high school graduation photo with the animal. In 2009, at the Calgary Zoo, Vitali, a male Siberian tiger, injured a man trespassing in his enclosure. A handler was also killed by a white tiger in Zion Lion Park. On 31 July 2012, Kushalappa Gowda (36), a zookeeper at Pilikula Nisargadhama in Mangalore, was killed by an ailing Tiger named Raja after he entered the squeezer cage in spite of warnings. Tiger died of heart attack in May 2015. in July 2014, an 11-year-old boy was attacked by a tiger in a zoo from Paraná, Brazil. His arm was amputated as a result from his injuries. In 2014, at the Delhi zoo in India, a male white tiger attacked a 20-year-old mentally unstable man after