Transcript for YouTube Prankster's Experiment Raises Questions About Child Abduction
Back now at 7:43 with "Gma on the lookout." An important report for parents. A frooigtenning look at how easy it is to abduct a child. Making us question the things we've been teaching kids about talking to strangers. Reporter: An estimated 460,000 children reported missing last year. Experts say the use of a small, cute animal to lure kids is one of the most common tricks. Now, a disturbing new video shows how easy that can be. Stranger danger. Do you want to go see the other puppies? Yeah. Reporter: This morning, a shocking new video suggesting just how easy it can be for a stranger to lure an unsuspecting child there their parent. Hey, you like puppies? Reporter: In a social experiment now viewed more than 25 million times. Joey, the youtube prankster, approaches several moms for permission to talk to their kids. How many times a day do you tell your kids not the talk to strangers? I tell my kid every day. I'm pretty sure she won't talk to you, but you can try. Reporter: But 3 out of 3 times he gets kids to talk to him and appears to easily convince them to leave the park hand in hand. Let's go see the other pup puppi puppies. You have to ask me if you want to see somebody. He could take you and you won't be with mommy anymore. Reporter: Did you expect it to be so easy? That was unexpected. Sometimes kids are too young to comprehend the dangers. Reporter: A 2005 ABC news investigation found people could lure kids away with a picture. Reporter: Experts say it's not enough to tell kids to steer clear of strangers. And Callahan Walsh, son of John Walsh, says parents need to explain who a trusted adult is. A police officer, a security guard. Many parents assume their child knows. Until it's put to the test, sort of like the scenario here, really determines where whether your child knows what to do. Reporter: Tell your kids to use the buddy system. Travel with a friend. And tell your children not the be afraid to say no to an adult if something doesn't feel right. Kids who fight back, kick and scream are the once most likely to get away. Trust your gut. Absolutely. Kids most likely to get in trouble on the way to and from activities. Not only be afraid to say no. Say no when ever you're uncomfortable. Coming up here, the secrets of sleep walking solved.
This transcript has been automatically generated and may not be 100% accurate.