People returning to the zoo will see more warning sings not to pester the animals. A new public alert system has also been installed.
The big cat enclosure where a Siberian tiger escaped on Christmas Day will remain closed indefinitely.
Meanwhile, police are still investigating whether the three victims of last week's attack had taunted the tiger shortly before it climbed or leaped out of its outdoor pen.
Mark Geragos -- who's representing the two surviving victims -- says none of the victims did anything to goad the tiger into