By Emily Schultze Ever been in this situation? You are out walking in the park with your dog. It is a beautiful day and you are admiring the sunlight streaming through the trees when suddenly you hear loud barks and realize your dog is straining against the leash. You try to pull them back to you, but that only makes your dog more agitated. Has your normally sweet pup been hiding a dark side? Why have they started acting so aggressively? Your dog hasn't been replaced by an ev