The lead actor frequently takes his dog Dave to work with him, but at one recent shoot, the three-year-old rescue became scared during a roughhousing play session and lashed out at one of the production team officials.

Sources tell TMZ the victim required medical attention and received 16 stitches to seal the wound, but was fine and promptly returned to work.

Harmon has not brought Dave back to the set ever since.

A representative for the star has yet to comment on the incident.