A reptile expert answers reptile-related questions from Twitter users in a video segment by Wired. The video features Dr. Rayna Bell, a herpetologist, who responds to questions about various reptile species, including snakes and lizards. She provides information on topics such as feeding, habitat, and behavior. Dr. Bell also gives advice on acquiring and owning reptiles as pets. The video offers an engaging and informative resource for reptile enthusiasts.