And if you don't want to go to the site: These are some pictures....

 Some pictures from my post - just FYI:

Top: Los Angeles old versus New LA zoo habitat for chimps. Second row: hippos and grazers at the San Diego Zoo, a tiger crossing above visitors at the Philadelphia Zoo, Polar bears interacting at the Port Defiance Zoo (né Tacoma Zoo). Bottom row: Lions at the San Diego Zoo and giraffes at the Living Desert.

and

Zoo success stories (from upper left). Okapis, California Condors, Golden Lion Tamarins, Channel Island fox, Arabian Oryx, Przwalskis’s Horses