I don't see an engineering connection in this at all - maybe a better security fence would have worked 

It's well known that alcohol impairs judgement . It's well known that carnivorous wild animals and humans don't mix well. What happens when we combine all three? One might expect a concoction of men, bears, and beer to have lethal consequences. Such was the case for a 23-year old man who inadvertently fed himself to Masha and Misha at the Belgrade Zoo.