The exonerated puppy is Bella -- who was just 9 months old when she was accused of biting the hell out of Vanessa -- who was jogging in Pennsylvania on May 2.
But in a trial that was like an episode of "CSI" -- Bella's owner argued that there's no way the doggy would have carried out the attack ... and then brought in several forensic experts -- including specialists in dog behavior and canine dentistry -- to back her story.
Ultimately, the experts paid off -- and the judge ruled that Bella could move back in with her owner ... instead of being put down.
Carlton -- who attended the six hour trial in person -- had no comment after the case.
