San Diego Zoo tries to mimic the wild

The fossa, a carnivore native to Madagascar eats lemurs. But not at the San Diego Zoo.  (Howard Lipin / The San Diego Union-Tribune)

Giraffes and Southern Southern white rhinos together at the San Diego Zoo Safari Park.  (Howard Lipin / The San Diego Union-Tribune)

Fringe-eared oryx in the foreground with a group of impala and two Southern white rhinos in the background, at the San Diego Zoo Safari Park.

A Schmidt’s red-tailed monkey at the San Diego Zoo.   (Howard Lipin / The San Diego Union-Tribune)

Three ring-tailed lemurs snuggle together at the San Diego Zoo.

A giraffe walks among a group of waterbuck and a brindled gnu at the San Diego Zoo Safari Park.

Fossa, a carnivore native to Madagascar eats lemurs. But not at the San Diego Zoo.  (Howard Lipin / The San Diego Union-Tribune)

A Southern white rhino makes his way between two bachelor Cape buffalo at the San Diego Zoo Safari Park.  (Howard Lipin / The San Diego Union-Tribune)

A giraffe is near a group of brindled gnu at the San Diego Zoo Safari Park.