(CNN) After more than a century, the iconic Barnum's Animal Crackers box has gotten a redesign.

Instead of animals caged in a boxcar on their way to a circus, the animals are now roaming free -- side-by-side in a grassland.

Barnum's Animal Crackers brand has been around for more than 115 years. The change is a result of evolution, says the company that makes the snack.

The old design.

"Throughout our history, we have leveraged and evolved our classic design to drive awareness around key animal and environmental issues," Kimberly Fontes, spokeswoman for Nabisco's parent company Mondelēz International, told CNN.

"To continue to make the brand relevant for years to come, we felt this was the right time for the next evolution in our design, now showing the animals in a natural habitat."

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