Puff adder

The puff adder is a thick-bodied, highly venomous snake that lives in Africa's savannas and grasslands, avoiding deserts and rainforests. It's responsible for more snakebite deaths in Africa than any other species due to its wide range, tendency to stay still when threatened, and potent venom.

• It lives almost everywhere in Africa except the Sahara and rainforests.
• When threatened, it often stays still and hisses loudly instead of slithering away.
• Its venom can be deadly to humans if not treated quickly.