Puppy absolutely captivated by robot worm

This is Sparky. He is an 8-week-old Jack Russell Terrier and he's very cute and playful. In this video, Sparky takes on a robot worm. He tries to defend his territory from the villainous robot worm by barking and snapping with his teeth. He never actually bites the worm because he's too cautious. By the way, the robot larva has an IR sensor on its head so it can avoid obstacles, including Sparky. Let's just say he didn't want to push his luck!