Why did they have to kill the escaped lioness at Mogo Zoo?

well yes it takes up to 20 mins for a tranq to work, and so in the interests of public safety this decision was made, not the right one in my opinion, and anyone who disagrees can meet and greet orina at din dins.They should be heavily fined for not keeping secured areas, this is why I don't like zoos very much, wildlife reserves now thats a better thing.