The fact that, as a matter of fact, the tiger got out of the cage logically escapes you because it doesn’t comport with your wish to excuse and exonerate the zoo.
As a matter of law, the zoo was found by the state to have been negligent in its duty and was thereafter fined $18,000, also as a matter of law.
Your personal opinions, notwithstanding.
Give up while you’re behind.
CA law based on lib nanny state theory. It's not compatable with the concepts of ability, responsibility for one's actions and freedom.