Robert Valentic / Ingram's Brown Snake (Pseudonaja ingrami) male adopting a typical defensive posture, Hamilton Channels near Boulia in far western Queensland, summer. Controlled conditions

Robert Valentic / Ingram's Brown Snake (Pseudonaja ingrami) female from the Hamilton Channels near Boulia, far western Queensland, Australia. Controlled conditions

Robert Valentic / Speckled brown snake (Pseudonaja guttata) from Avon Downs, Barkly Tableland, Northern Territory, Australia. Controlled conditions

Robert Valentic / Lesser black whipsnake (Demansia vestigiata) at sunset, Normanton, Gulf of Carpenteria, north-western Queensland, Australia. Wet season.

Jiri Lochman / Narrow-headed whipsnake (Demansia angusticeps) with tail in water, Edgar Range, Kimberley, Western Australia, June. Venomous species.

Jiri Lochman / Narrow-headed whipsnake (Demansia angusticeps) Kimberley, Western Australia, June. Venomous species.

Jiri Lochman / Narrow-headed whipsnake (Demansia angusticeps) entering water, Edgar Range, Kimberley, Western Australia, June. Venomous species.

Jiri Lochman / Narrow-headed whipsnake (Demansia angusticeps) two juveniles, Edgar Range, Kimberley, Western Australia. Venomous species.

Robert Valentic / D - Olive whipsnake, male {Demansia olivacea} NT, Australia

Robert Valentic / Shines whipsnake {Demansia shinei} male, Tennant Creek, Northern Territory, Australia

Robert Valentic / Rufous whipsnake {Demansia rufescens} basking on warm desert sand, Port Hedland, Western Australia

Robert Valentic / Rufous whipsnake {Demansia rufescens} foraging for lizards, diurnal, Pilbara, Western Australia