1. Large African viper that inflates its body when alarmed
   - Bitis arietans 
2. Harmless North American snake with upturned nose; may spread its head and neck or play dead when disturbed
   - hognose snake, sand viper

Derived forms: puff adders

Type of: colubrid, colubrid snake, viper

Part of: Bitis, genus Bitis, genus Heterodon, Heterodon

Encyclopedia: Puff adder

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