In a startling moment caught on home security video, a large wild cat—believed to be a mountain lion—was seen leaping into a suburban backyard and attacking a family’s dog before retreating back over the fence. The dramatic footage, now circulating online, shows the cat pacing along the fence line before making a sudden and powerful jump into the yard, where the startled dog immediately confronts it. Neighbors say the commotion was over in seconds. “I heard the barking turn into yelps and ran ou