Seven year old kid attacked by a leopard at the Wichita Zoo. Who's to blame?

It was a school outing. There were volunteer parent moderators who would take kids in groups of 4 or 5. The person responsible for the kid was one of those parents. The kid climbed over a protective fence and walked right up to the cage

I think the zoo takes reasonable precautions so they aren’t to blame. The person who was supposed to be watching the kid has some blame, obviously, but I have to ask…who raised this kid to think the rules don’t apply to him? I’d like to hear from the person who was responsible for him…did she turn away to talk to another kid for a second, and the 7 year old just ran off? Whose fault would that be?

What are your thoughts?