I Know My Snack's in Here Somewhere

Via MTSOfan, who writes:

The plastic ball contains some delicious food for the North American river otters. The problem for Jet, the male otter, is that the ball is hanging from a chain. Removing his breakfast is no easy task! 

In the wild, food is not served to animals in bowls. Zoos use "enrichment" techniques to make the residents solve problems and work for their meals. Therefore, they're behaving the way they would in a natural environment.