PUFF ADDER

Considered one of Africa's deadliest snakes, the puff adder (Bitis arietans) is a viper, related to rattlesnakes, adders and other members of the Viperidae family. Its venom is not the most toxic of any snake but as it is very common and fails to retreat (unlike most other snakes) upon approach of people, this species is responsible for most hospital cases of snake bite. This picture was taken in Livingstone National Park, Zambia.