Often feared as dangerous, puff adders may be unsung agricultural heroes—capable of devouring rodents at extraordinary rates just when farmers need it most. By harnessing their natural abundance, ...

The puff adder is one of the deadliest snakes in Africa, and also an expert at camouflage. Can you spot the puff adder in the accompanying image, or in the footage before the narrator zooms in?

Puff adders leave linear, sometimes slightly undulating traces. EcoPrint/Shutterstock Snakes are familiar, distinctive – and often feared – reptiles. And they’ve been around for a long time: body ...