Lahore Zoo received a pair of Bengal tigers from Belgium in 1992 to start their captive breeding program. In 1997, six Bengal tigers died from "Trypanosomiasis" at the zoo, and in 2006, four more became victims. In July 2007, two female Bengal tigers, one of which had given the zoo 19 cubs, died from same disease. In early May 2009, a 3-year-old female Bengal tiger died after a cesarean section to take out her dead babies. In April 2009, a Bengal tiger gave birth to four In July 2009, a lion gave birth to two cubs but killed them by eating their heads. Director, Zafar Shah, said that the lion had been killing her cubs for the last three years and is a victim of "cannibalism" - a mental disease found in 5-6% of lions worldwide. At Lahore Zoo, there have been many births of Bengal tiger cubs who are deformed and do not survive long. In late 2010, the officials showed concern for the issue of inbreeding that might be the reason behind these deaths.