Gillian van Houten and partner John Varty play with Julie, an endangered Bengal tiger being rehabilitated to live in the wild, at the Varty family's tiger sanctuary in Philippolis, South Africa. Varty, a wildlife filmmaker and conservationist, was recovering in hospital March 29, 2012 after being attacked by one of his tigers.
- [ALEXANDER JOE/AFP/Getty Images]

Canadian zoologist Dave Salmoni plays with Ron, one of two endangered Bengal tigers being rehabilitated to live in the wild, May 20, 2003, at Tiger Moon Sanctuary in Philippolis. The rehabilitation program for the captive-bred tigers is a private-funded multi-million dollar project.
- [ALEXANDER JOE/AFP/Getty Images]

Canadian zoologist Dave Salmoni plays with Ron, one of two endangered Bengal tigers being rehabilitated to live in the wild, May 20, 2003, at Tiger Moon Sanctuary in Philippolis, South Africa. The rehabilitation program for the captive-bred tigers is a privately-funded multi-million dollar project.
- [ALEXANDER JOE/AFP/Getty Images]

Gillian van Houten, partner of filmaker John Varty, plays with Ron and Julie, two endangered Bengal tigers being rehabilitated to live in the wild, May 20, 2003, at Tiger Moon Sanctuary in Philippolis, South Africa. The multi-million dollar rehabilitation program for the captive-bred tigers is being privately funded by the Varty family.
- [ALEXANDER JOE/AFP/Getty Images]

Ron, one of two endangered Bengal tigers being rehabilitated to live in the wild, is pictured May 20, 2003, at Tiger Moon Sanctuary in Philippolis. The multi-million dollar rehabilitation program for the captive-bred tigers is being privately funded by the Varty family.
- [ALEXANDER JOE/AFP/Getty Images]

A 13-day-old South China tiger cub is pictured December 6, 2007 in Philippolis, South Africa. The cub is the first of his species to be born in captivity outside of China. The male tiger who was born on November 23 at Laohu Valley Reserve in South Africa's Free State province.
- [ALEXANDER JOE/AFP/Getty Images]

Picture taken December 6, 2007 shows a 13-day-old South China tiger cub in Philippolis, South Africa. The cub is the first of his species to be born in captivity outside of China. The male tiger was born on November 23 at Laohu Valley Reserve in South Africa's Free State province.
- [ALEXANDER JOE/AFP/Getty Images]

A 13-day-old South China tiger cub is pictured in Philippolis, South Africa, on December 6, 2007. The cub is the first of his species to be born in captivity outside of China. The male tiger was born November 23 at Laohu Valley Reserve in South Africa's Free State province.
- [ALEXANDER JOE/AFP/Getty Images]

Cathay, mother of a 13-day-old South China tiger cub is pictured in Philippolis, South Africa, on December 6, 2007. The cub is the first of his species to be born in captivity outside of China. The male tiger was born November 23 at Laohu Valley Reserve in South Africa's Free State province.
- [ALEXANDER JOE/AFP/Getty Images]

Cathay, mother of a 13-day-old South China tiger cub is pictured in Philippolis, South Africa, on December 6, 2007. The cub is the first of his species to be born in captivity outside of China. The male tiger was born November 23 at Laohu Valley Reserve in South Africa's Free State province.
- [ALEXANDER JOE/AFP/Getty Images]

Julie, one of two endangered Bengal tigers being rehabilitated to live in the wild, is pictured May 20, 2003, at Tiger Moon Sanctuary in Philippolis. The multi-million dollar rehabilitation program for the captive-bred tigers is being privately funded by the Varty family.
- [ALEXANDER JOE/AFP/Getty Images]

Picture taken December 6, 2007 shows a 13-day-old South China tiger cub, the newest addition to one of the world's rarest cat species, in Philippolis, South Africa. The cub is the first of his species to be born in captivity outside of China. The male tiger was born on November 23 at Laohu Valley Reserve in South Africa's Free State province.
- [ALEXANDER JOE/AFP/Getty Images]

Cathay, mother of a 13-day-old South China tiger cub is pictured in Philippolis, South Africa, on December 6, 2007. The cub is the first of his species to be born in captivity outside of China. The male tiger was born November 23 at Laohu Valley Reserve in South Africa's Free State province.
- [ALEXANDER JOE/AFP/Getty Images]