Which snake is the smallest and can be housed in captivit?

The Barbados threadsnake (Leptotyphlops bilineatus) holds the title of the smallest snake, measuring about 10 cm (4 inches) in length. It is a burrowing species that can be housed in captivity, although it requires specific habitat conditions, such as a humid environment with a substrate that allows for burrowing. Proper care includes a diet of small invertebrates and ensuring a secure enclosure to prevent escape. While they are not commonly kept as pets, they can be an interesting addition for experienced herpetologists.