Wot Gorilla? - The Case of the Safe Knife-wielding Ape and the Unauthorised Trousers

A sad case, the otter that drowned in a pair of "unauthorised trousers". But the article then gives a whole list of other tragedies that have occurred at the same zoo.

And then, at the end - an example of the kind of slack thinking that leads to these problems.

"In 2009, a gorilla was photographed wielding a knife which a keeper had inadvertently left in its enclosure, an incident the zoo described as "overblown" because gorillas don't understand the concept of using tools as weapons."

I'll tell you the word that quotation is lacking. "Yet." That's the word they should've put in that quotation. "Yet." Have these people not even watched 2001 or the Planet of the Apes?