This video of Denver Zoo lions is proof that all cats love boxes.

All Cats Love Boxes, Even Denver Zoo Lions

There's something special about boxes to cats, maybe it's because they're dying to know what's inside, maybe because they need to know if they can fit in the box. This video of the lions at the Denver Zoo just goes to show that all cats love boxes.

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Zoo Keepers Collected Boxes For Months For This Moment

The zookeepers at the Denver Zoo have been collecting boxes for the last three months for this very moment. Zookeepers created lion-sized forts and pathways for the lions and they absolutely loved it.

Watch Denver Zoo Lions Have a Blast With Boxes

The months of preparation were so worth it. Watch this video of the Denver Zoo lions proving that all cats really do love boxes, even cats as big as them.

Now that you've watched the video, here's a play-by-play of what the Denver Zoo lions think of all of these fun boxes.

Look: Lions at Denver Zoo Prove That All Cats Love Boxes

Look at the lions at the Denver Zoo playing with a ton of boxes. These pictures of Denver Zoo lions prove that all cats love boxes.

Amazing Pictures of Wild Horses of Sand Wash Basin in Colorado

Look at these amazing pictures of the wild horses of Sand Wash Basin in Colorado. There are 900 horses that live on the 160,000 acres of the Sand Wash Basin.

KEEP SCROLLING FOR MORE: More Stunning Photos of the Wild Horse in Colorado's Sand Wash Basin

The Sand Wash Basin HMA (Herd Management Area) is located in the northwest corner of Colorado, about 50 miles west of Craig, Colorado, and is home to over 800 wild horses. Scott Wilson is a Colorado photographer who was recently able to capture some amazing pictures of the herd.

5 Pets Who Have Been at a Grand Junction Shelter the Longest

Adopt these five pets who have been at Roice-Hurst Humane Society for too long. Meet the five pets who have been at this Grand Junction shelter the longest.