night adder Directory References Discover 9 of the World’s Deadliest Mammals What State Is Washington, D.C. In? Is Australia an Island? History of Technology Timeline 6 Cultures That Recognize More than Two Genders Why Is Alcohol Measured by Proof? 9 Animals That Look Like Leaves Contents night adder snake Ask the Chatbot a Question Ask the Chatbot a Question Also known as: Causus Learn about this topic in these articles:characteristics In adderNight 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