Per APD, they actually did not say the dog was stabbed - good point:
“On July 28, 2021 the Katherine Janness’ body was discovered inside Piedmont Park. She was last seen walking her dog in Midtown Atlanta. (Photo on flyer was at 12:09am July 28, 2021) The victim and her dog were killed inside the park.”
“On Wednesday July 28, 2021, at around 1:10am officers responded to Piedmont Park, 1073 Piedmont Ave, on a report of a person stabbed. On scene officers found a deceased adult female with multiple stab wounds. Atlanta Police Homicide Unit detectives responded and are investigating the incident.”
“The timeframe for review should be between 10:30 PM on Tuesday July 27, to 1:30 AM on Wednesday July 28.”
News List | Atlanta Police Department