At Chicago’s Lincoln Park Zoo, the mantra is “work smarter, not harder”—and Optimus the chimpanzee is leading by example!

Animal Care staff often prepare special frozen treats by filling balls with diluted juice, offering chimpanzees a refreshing snack that slowly melts throughout the day. While many chimps shake, tap, or poke at the ice to access the liquid, Optimus had his own brilliant method, demonstrating just how inventive these animals can be.

This enrichment not only provides a tasty reward but also stimulates natural problem-solving behaviors among the chimps. It’s another shining example of how zoos like Lincoln Park promote both physical and mental wellness for their animals.

Have you ever seen a smarter snack strategy? Swing by Lincoln Park Zoo to watch more clever moments like this in action!

Credit: Dianne M., Lincoln Park Zoo, Chicago, IL