A pet vest is basically provided with an upper portion, an underside portion and a collar portion. The upper portion is sized and structured to cover a pet dorsal area. The upper portion has a pocket configured to contain a calming device. The underside portion is sized and structured to cover a pet ventral area. The collar portion is disposed between proximal ends of the upper portion and the underside portion. The collar portion connects the upper portion and the underside portion. The collar portion defines a receiving hole sized and structured to substantially surround a pet neck area.
