Robert Valentic / D - Rugose Death Adder (Acanthophis rugosus) mating, NT, Australia

Martin Willis / Northern Death Adder (Acanthophis praelongus) camouflaged in leaf litter, Northern Australia, Australia

Martin Willis / Northern Death Adder (Acanthophis praelongus) camouflaged in leaf litter, Northern Australia, Australia

Rod Williams / Northern death adder (Acanthophis praelongus) captive, from Northern Australia and New Guinea

Robert Valentic / Rugose Death Adder (Acanthophis rugosus) adult female watches and waits to lure prey to its grub-like tail tip, Darwin, Northern Territory, Australia

Robert Valentic / Northern death adder {Acanthophis praelongus} male luring prey by wriggling its tail tip, Weipa, Queensland, Australia

Robert Valentic / Close up of everted hemipene (bi-lobed male reproductive organ) of Northern death adder {Acanthophis praelongus} Northern Territory, Australia

Robert Valentic / Robert Valentic's swollen finger one week after being bitten by the Northern death adder {Acanthophis praelongus} Australia

Robert Valentic / Rugose Death Adder (Acanthophis rugosus) female giving birth, live neonatal babies break out of their amniotic sacs, Darwin, Northern Territory, Australia

Robert Valentic / Rugose Death Adder (Acanthophis rugosus) male wriggling the tip of its tail (caudal lure) to mimic a grub or worm to attract a lizard within strike range, Darwin, Northern Territory, Australia

Michael & Patricia Fogden / Northern Death Adder (Acanthophis praelongus) venomous snake in defensive display, northern Australia

Robert Valentic / Rugose Death Adder (Acanthophis rugosus) male subadult, NT, Australia