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?

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, ...

Until last month, I had never seen a puff adder. After two days in South Africa, I had seen nine. Although this highly venomous viper is shy if unprovoked, the species is credited with the majority of ...