The cast and crew of The Walking Dead are well acquainted with onscreen death, but a real one made them stop and pay tribute: Seven, the Belgian Malinois who played Daryl Dixon’s faithful dog, Dog, has crossed the rainbow bridge.

The hit AMC show’s Instagram posted a photo of the famous pooch in profile, captioning it, “Rest in peace, Seven. #TWD’s best boy.”

Norman Reedus, who plays Dixon, mourned the pup with an Instagram Story showing photos of Seven with members of the cast on set — and just him alone, bonding with the dog off camera. “Gonna miss u seven,” Reedus wrote alongside a broken heart emoji, adding, “Best TV buddy ever.”

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