A defense dog bite expert who testified on Monday that she believes a dog attacked John O’Keefe at a home in Canton where he was found dead is back on the witness stand Tuesday in Karen Read’s murder retrial.

Dr. Marie Russell, a key defense witness, testified Monday she believes John O’Keefe’s arm injuries “were inflicted as the result of a dog attack.” The post Livestream: Karen Read’s dog bite expert back on the stand appeared first on Boston.