A. bilineatus, commonly known as the Cantil, is a venomous pit viper found in Central America. A. howardgloydi, or the Howard Gloyd's Cantil, is a close relative with similar habitats. A. russeolus, the Yucatán Cantil, is known for its reddish hue. A. taylori, Taylor's Cantil, inhabits dry forests and grasslands.

The species Agkistrodon bilineatus (Mexican cantil), Agkistrodon howardgloydi, Agkistrodon russeolus, and Agkistrodon taylori are native to regions in Central America and parts of North America. Their distribution includes countries such as Mexico, Guatemala, Honduras, and Belize. Each species has a specific range within these broader regions.

These species typically inhabit tropical and subtropical environments. They are found in a variety of habitats, including forests, swamps, and near rivers and streams. The climate in these regions is generally warm and humid, providing a suitable environment for these snakes.

Agkistrodon species are often found in areas with dense vegetation that provides cover for hunting and protection. They are primarily terrestrial but can be semi-aquatic, depending on the availability of water bodies. These snakes are predators, feeding on small mammals, amphibians, and occasionally birds, playing a role in controlling the populations of these species in their ecosystems.