Types of night snakes

Siphlophis is a genus in the family Colubridae, the largest and most diverse snake family on Earth. The roughly seven species in our database are sometimes called tropical flat snakes or spotted night snakes, and they live in Central and South America. Like most members of Colubridae, they are slender, agile snakes built for active foraging rather than ambush.

These snakes are tropical and subtropical animals. Their range spans parts of Central America and a broad swath of South America, where they occupy forested and well vegetated habitats. Many members are at home in trees and shrubs, climbing through branches at night, while others move through leaf litter and lower vegetation. The genus name itself refers to the slender, drawn out body shape typical of the group.

In general terms, Siphlophis snakes are recognized by a thin body, a head that is distinct from the neck, and noticeably large eyes with vertical or rounded pupils that suit a nocturnal lifestyle. Coloration tends toward strong patterns of bands, blotches, or spots, often in reds, oranges, browns, and blacks, which is reflected in common names like spotted night snake. Pattern and color vary between species and regions, so identification of an exact species is best confirmed by a herpetologist or regional field guide.

Members of this genus are rear-fanged, meaning they have enlarged grooved teeth toward the back of the upper jaw and a mild venom used to subdue small prey. They are not considered dangerous to people, and bites from rear-fanged colubrids like these are typically minor. Even so, no wild snake should be handled. If a bite occurs and any concerning symptoms develop, do not wait it out. In the United States contact Poison Control at 1-800-222-1222, and anywhere call local emergency services for medical care.

Ecologically, Siphlophis snakes are nocturnal hunters that feed on small vertebrates such as lizards and frogs, with some species also taking small reptile eggs or other prey. As with the vast majority of colubrids, they reproduce by laying eggs. Their behavior is generally secretive and non aggressive; when found they are more likely to flee or hide than to confront a person.