Caught on Tape: Is an African Lion Roaming Streets of California?

A southern California city on edge, a lion on the loose? This grainy video is causing the excitement and raising more questions than answers. And nick watt has the story. Reporter: A lion's gait, a man-eating countenance, the security video is spine tingling. It has the pointy ears. Reporter: But that's no mountain lion, says the California department of fish and wildlife. What kind of lion is it? Some are saying proper lion, african lion. The mayor's involved. The tail doesn't match up to a mountain lion. Still a mystery. Reporter: The local zoo claims off their big cats are accounted for. It doesn't belong here. What's it doing over here? Reporter: Listen, could be anything. Remember that lion scare in Virginia? And there was a lion running across the street. Reporter: Turns out it was Charles, the bizarrely qualified labradoodle. People do strange grooming on dogs these days, but the gait of this mystery beast in California, I don't know. We have small dogs. And my sister got a small little dog. Keep pets inside. Reporter: If I was a pet chihuahua in Norwalk right now, I would not be sleeping easily in my dead. Whatever that cat is, it looks mean to me. For "Good morning America," nick watt, Los Angeles. It's not a cat, it's a dog.