Bruno is 29 years old, 300 pounds, and is one of six orangutans at the zoo.
The animal has since been recaptured, and no one was hurt. "Fortunately all of our great apes, the staff trained them to allow medical procedures, so the keeper actually put him through his behaviors, and he allowed her to hand inject him with anesthetic and went right to sleep. They carried him to his bedroom, and it was all over in about 20 minutes," said John Lewis, L.A. Zoo director.
Zoo officials said visitors were never in any danger.
The zoo will be open tomorrow as usual.