Karen Read Murder Trial Defense Dog Bite Expert Testifies

Karen Read's retrial continues with a focus on whether John O'Keefe's injuries were caused by a dog attack rather than being struck by Read's SUV. Defense expert Dr. Maria Russell, an emergency physician and forensic pathologist, testified that the wounds on O'Keefe's arm, including abrasions and claw marks, were inflicted by a dog, specifically a German Shepherd named Chloe, and not by a vehicle. The prosecution challenged her testimony, but the judge allowed it to proceed. Meanwhile, a former Canton police officer testified reluctantly and faced heated exchanges with the defense, amid allegations of shifting testimony and claims of a "blue wall of silence" among police to protect one another. The defense maintains that Read's vehicle did not hit O'Keefe, while prosecutors argue she struck him while intoxicated. Testimony and cross-examination are ongoing as the jury continues to weigh the conflicting accounts in this high-profile murder retrial.