A medical doctor testified in the Karen Read murder trial that she believes wounds to John O’Keefe’s arm were “inflicted by a dog.” ...

Dr. Marie Russell said cuts on John O'Keefe's arm appeared in patterned multiple groupings, the way a dog's teeth and claws make marks.

As the trial enters its 7th week, Dr. Marie Russell, a former Malden, MA cop and University of Southern California Keck ...