In this handout photograph received from the Delhi Police at the scene of the incident, an Indian schoolboy is confronted by a white tiger inside its enclosure at the Delhi Zoo in New Delhi on September 23, 2014. A white tiger on September 23 attacked and killed a schoolboy who appeared to have jumped or fallen into its enclosure at the zoo in the Indian capital, witnesses said. (Photo by AFP Photo/Delhi Police)

Raja, an eight-year-old rescued Royal Bengal Tiger, rests inside South Kahayar Bari tiger rescue centre at Jaldapara Wildlife Sanctuary, about 160 km (99 miles) north of Siliguri February 21, 2010. (Photo by Rupak De Chowdhuri/Reuters)

A paw mark of a tiger is seen on the fringes of a forest during a week-long tiger census in the core area of Sundarbans Tiger Reserve, about 130 km (81 miles) south of Kolkata March 4, 2010. (Photo by Parth Sanyal/Reuters)

A rescued tigress kept in a cage on a boat is taken for treatment and observation at Shonagon village in Sunderbans, south of Kolkata, February 22, 2010. (Photo by Parth Sanyal/Reuters)

One of the two adult tigers, with a tranquilizer dart on its body, walks inside the Assam State Zoological cum Botanical Garden in Guwahati January 30, 2010. (Photo by Utpal Baruah/Reuters)

A male tiger is released into the waters of the river Harikhali at the Sundarbans delta forest, about 150 km (93 miles) south of Kolkata July 22, 2009. (Photo by Parth Sanyal/Reuters)

A Royal Bengal tiger tries to catch a piece of chicken inside its enclosure at Nehru Zoological Park in Hyderabad March 17, 2009. (Photo by Krishnendu Halder/Reuters)

A two-and-a half years old female tigress named “T-17” is seen at the Ranthambhore National Park in Sawai Madhopur district in Rajasthan January 15, 2009. (Photo by Vijay Mathur/Reuters)

A wounded male Royal Bengal Tiger sits in a cage at a veterinary zoo hospital in Kolkata March 16, 2009. (Photo by Jayanta Shaw/Reuters)

Forest workers watch a tigress as she jumps into the waters of river Sundari Kati, after its release from a cage at Sundarbans, about 150 km (93 miles) south of Kolkata February 19, 2008. (Photo by Parth Sanyal/Reuters)

White tigers swim in a pond on a hot day at the zoological park in Hyderabad April 27, 2008. (Photo by Krishnendu Halder/Reuters)

White tigers play inside their enclosure at a zoological park on the outskirts of Chandigarh January 12, 2008. (Photo by Ajay Verma/Reuters)

A tigress carries her cub at a zoological park in Guwahati October 24, 2007. (Photo by Utpal Baruah/Reuters)

An Indian white tiger yawns inside its enclosure at a zoological park in Kolkata July 2, 2007. (Photo by Parth Sanyal/Reuters)

Five-month-old white tigers play inside their open enclosure at a zoological park in New Delhi March 28, 2007. (Photo by B. Mathur/Reuters)

White tigers play in a pond at Nehru Zoological Park in Hyderabad April 27, 2007. (Photo by Krishnendu Halder/Reuters)

Five-month-old white tigers play inside their open enclosure at a zoological park in New Delhi March 28, 2007. (Photo by B. Mathur/Reuters)

White tigers sit inside their enclosure in a zoological park in Hyderabad January 12, 2007. (Photo by Krishnendu Halder/Reuters)

An Indian Royal Bengal tiger walks inside its enclosure at the South Khairbari nature park, about 165 km (103 miles) north of Siliguri November 28, 2006. (Photo by Rupak De Chowdhuri/Reuters)

A white tiger yawns in an enclosure in New Delhi zoo December 15, 2005. (Photo by Reuters/Stringer)

A Royal Bengal tiger swims in a pond at a zoo in New Delhi, September 14, 2006. (Photo by Kamal Kishore/Reuters)

A royal Bengal tiger enjoys a shower in a pond to get some respite from the heat wave in his enclosure at Patna zoo April 9, 2006. (Photo by Reuters/Stringer)

An Indian Royal Bengal tiger named Shyam, roars inside his enclosure at the Jaldapara wild life sanctuary, 165 km (103 miles) from Siliguri August 2, 2005. (Photo by Rupak De Chowdhuri/Reuters)