Etienne Littlefair / Rough-scaled death adder (Acanthophis rugosus), slightly inflated to show bright defensive colours hidden between scales, Cox Peninsula, Northern Territory, Australia, November.

Etienne Littlefair / Rough-scaled death adder (Acanthophis rugosus), slightly inflated to show bright defensive colours hidden between scales, Batchleor, Northern Territory, Australia, November.

Robert Valentic / Rugose death adder (Acanthophis rugosus) male from savannah woodland habitat near Cape Crawford, Northern Territory, Australia. Controlled conditions