Gorilla mother named 'Gana' carries her young baby on her back in their enclosure at a zoo in the western German city of Muenster on August 17, 2009. The baby named Claudia was born on August 2, 2009 at the zoo. Gorillas are listed as an endangered species due to hunting and destruction of their natural habitats. AFP PHOTO DDP / HENNING KAISER ***GERMANY OUT*** (Photo credit should read HENNING KAISER/AFP/Getty Images)

Gorilla mother named 'Gana' holds her young baby in their enclosure at the zoo in the western German city of Muenster on August 17, 2009. The baby named Claudia was born on August 2, 2009 at the zoo. Gorillas are listed as an endangered species due to hunting and destruction of their natural habitats. AFP PHOTO DDP / HENNING KAISER ***GERMANY OUT*** (Photo credit should read HENNING KAISER/AFP/Getty Images)