Cathy Kononetz

USA TODAY

When Katie Stulc and her husband Nick DuFoe lost their beloved black lab Minnie earlier this year, it left a void in their family. But they weren't ready to get another dog.

That's when a friend offered them two kittens. And soon after, a Facebook post led them to a Muscovy duckling. You might be thinking, ducks and cats don't mix ... but don't tell this family that.

They named the duck Penny and placed her in a pen next to their two cats, Sheldon and Leonard.

Wait, does something about this situation sound familiar? That's right, Penny lives next door to Leonard and Sheldon. And just like their neighbor namesakes on the sitcom "Big Bang Theory," the trio create some pretty classic moments.

"Hangin' out… that's what they do," Stulc explains with a sigh. She says when Penny picks at their fur, the cats will paw at her, creating what amounts to a feline-fowl boxing match.

You can see the adorable trio playing together in the video above.

While most of their neighbors are content with dogs or horses, this family gets a kick out of the oddities that unfold at their home on a daily basis. Facebook pictures of the unusual posse always get a huge reaction. "There's no one else like us," Stulc said, "That's for sure."

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