night adder

snake

Also known as: Causus

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Last updated

July 23, 2026

Quick Summary

Night adders are a genus of African vipers (Causus) known for their enlarged venom glands that extend along their necks. These snakes are typically found south of the Sahara Desert and are relatively slender, usually measuring less than 1 meter (3 feet) in length. Night adders are nocturnal and primarily feed on frogs and toads. They are distinct from other snakes that may be called "adders," such as the European common adder or the puff adder.12

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Night adders (Causus) are small relatively slender vipers found south of the Sahara and are typically less than 1 metre (3 feet) long. They are active at night and feed nearly exclusively on frogs and toads.
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Night adders (Causus) are small relatively slender vipers found south of the Sahara and are typically less than 1 metre (3 feet) long. They are active at night and feed nearly exclusively on frogs and toads.
Read More