Thursday morning as a Colorado Springs police officer was snapping pictures of a large black bear, the bear ran at the officer. The officer retreated while still snapping pictures. A call went out to residents within a half mile area of the last sighting, 3920 N. Union Blvd. The phone call was a precautionary measure, warning people there was an aggressive black bear in the area. The best course of action is to leave the animal alone and the bear will find his way back to the wild. Residents who had a dangerous encounter with the animal were instructed to call 911. From The Denver Channel .