I just read the clip title to my friend Kathryn and she burst out laughing

Great story.

I recently read a similar article and the solution that zoo found was to spread the food all over the animals cage so that rather than allow them a feeding trough, they had to actually spend much of their time picking through the grass and hay for it. It simulated scavenging and hunting for them.

Interesting oortcloud -- simple idea, but it works.