BOSTON (CBS) – A mishap on the Orange Line caused a delay and left a dog briefly stranded on a subway car Tuesday afternoon.

The dog’s owner was getting off the train when the operator shut the door on the leash, trapping the pet.

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Passenger Krista Magnuson, who took the photo, said on the other side of the glass, the owner appeared to be getting a little nervous. The dog was cool as can be, the whole time.

“He looks like he’s being a good boy. I’m glad the train didn’t go. He was all right,” one rider said.

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A dog got separated from his owner on the Orange Line (Image credit: Krista Magnuson)

Riders of course sympathized with the well-behaved dog, relieved he was on the right side of the door.

“It’s sad, but he’s warm!” another rider said.

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There was a brief delay while MBTA workers pried open the door, which then wouldn’t close. Passengers were moved to a working car, and the reunited owner and dog were off safe and sound.