SYDNEY, AUSTRALIA - DECEMBER 11:  Kibabu the silverback keeps a watchful eye on surroundings as the media cover the exhibit re-opening after the birth of a male infant who is the newest addition to the Western Lowland Gorilla group at Taronga Zoo December 11, 2007 in Sydney, Australia. The 3 day old infant who is yet to be named, was sired by Kibabu and was born on Saturday Decemeber 8th and is the 4th successfull Gorilla birth at Taronga Zoo. Getty Images logo Getty Images 24 months ago

SYDNEY, AUSTRALIA - DECEMBER 11: Kibabu the silverback keeps a watchful eye on surroundings as the media cover the exhibit re-opening after the birth of a male infant who is the newest addition to the Western Lowland Gorilla group at Taronga Zoo December 11, 2007 in Sydney, Australia. The 3 day old infant who is yet to be named, was sired by Kibabu and was born on Saturday Decemeber 8th and is the 4th successfull Gorilla birth at Taronga Zoo.