(CNN) The brewery that makes Spotted Cow beer got a late-night visit from the beer's namesake: A group of spotted cows.

Early on Monday morning, 16 dairy cows walked into the parking lot of New Glarus Brewing Company in New Glarus, Wisconsin.

The bovine beer run was caught on tape. The real Wisconsin cows had the right idea to shop local -- Spotted Cow is a farmhouse ale that can only be purchased in the state of Wisconsin.

"Spotted cows come to the home of Spotted Cow. When the security guard called, I thought it was a joke," the brewery's chief operating officer Drew Cochrane told CNN.

The cows appeared in the security camera footage at 1:45 a.m. Monday. A hired security guard pulled up to the brewery and saw the cows congregating, Cochrane said.

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