Chien Lee / Minden / Black-headed Cat Snake (Boiga nigriceps) swallowing alive Harlequin Flying Tree Frog (Rhacophorus pardalis) prey, Kubah National Park, Sarawak, Malaysia, sequence 1 of 4
Jack Dykinga / Sandhill cranes (Antigone candensis), in flight against the setting full moon at dawn. Whitwater Draw, Arizona Game and Fish Wildlife area, Arizona, USA.
Brian Bevan / Grass snake (Natrix natrix) at pond edge sensing with tongue, Bedfordshire, UK, September.
Brian Bevan / Grass snake (Natrix natrix) sensing with tongue while swimming through duckweed in pond, Bedfordshire, UK, September.
John Cancalosi / Captive corn snake (Pantherophis guttatus) eating an Eastern chipmunk (Eutamias sp.). The chipmunk was found dead and fed to the captive snake. North America.
Robert Valentic / Golden tree snake (Chrysopelea ornata) male, Patong Beach, Phuket Island, Thailand. Controlled conditions
John Cancalosi / Juvenile Timber rattlesnakes (Crotalus horridus) massed together at nest site, Pennsylvania, USA.
John Cancalosi / Timber rattlesnakes (Crotalus horridus) at nest site with young, Pennsylvania, USA.
John Cancalosi / Corn snake (Pantherophis guttatus) young hatching, captive. Maryland, USA.
Nick Garbutt / Sumatran pit viper (Trimeresurus sumatranus) juvenile on tree trunk, in tropical rainforest. Danum Valley, Sabah, Borneo, Malaysia.
Fabio Pupin / Meadow viper, (Vipera ursinii), basking in alpine meadow, Apennines, Italy, September . Non-ex.
Fabio Pupin / Peringuey's desert adder, (Bitis peringueyi), sidewinding on dune, Namib desert, Namibia, February . Non-ex.
Jo-Anne McArthur / We Animals / Rattlesnake skins pinned to a wall, with bloody handprints and signatures of those who have skinned snakes at at the annual Rattlesnake Roundup, Sweetwater, Texas, USA. Highly commended in the Wildlif...
Morley Read / Tropical flat snake (Siphlophis compressus) climbing on a flowering bromeliad (Aechmea) in the Amazon rainforest, Orellana Province, Ecuador.
Morley Read / Slow motion clip of a Linnaeus' sipo snake (Chironius exoletus) with open mouth, part of threat display, Amazon rainforest, Orellana Province, Ecuador.
John Chan / Two male Southern Pacific rattlesnakes (Crotalus oreganus helleri) fighting during mating season. This behaviour is known as a "combat dance", and is used to determine dominance and the right to mate...
David Tipling / Common European adder (Vipera berus) two males fighting over a female. Holt, North Norfolk, England, UK. April
David Tipling / Common European adder (Vipera berus) two males fighting over a female, Holt, North Norfolk, England, UK. April
David Tipling / Common European adder (Vipera berus) two males fighting over a female, Holt, North Norfolk, England, UK. April.
Robert Valentic / Rough-scaled death adder (Acanthophis rugosus) waving tip of tail as a lure to entice prey within striking range. Mount Isa, Queensland Australia.
Daniel Heuclin / Horned viper (Vipera ammodytes) in natural setting, Turkey.
Robert Valentic / Monocled cobra (Naja kaouthia) on rubber plantation at Phak Lok, Phuket Island, Thailand .
Robert Valentic / Eastern brownsnake (Pseudonaja textilis) juvenile. Australia.
Robert Valentic / Coastal taipan (Oxyuranus scutellatus) tasting air, Julatten, north Queensland, Australia,
Guy Edwardes / Mozambique spitting cobra (Naja mossambica) spitting venom. Kruger, South Africa. Controlled conditions.
Robert Valentic / Eastern tiger snake (Notechis scutatus) female, Yarra River corridor in suburban Melbourne, Victoria, Australia, in mid-summer. She is in a defensive pre-strike position with hood expanded, accompanie...
Robert Valentic / Red-bellied Blacksnake (Pseudechis porphyriacus) basking on rock, Lerderderg Gorge, Victoria, Australia, February.
Paul Hobson / Parrot snake (Leptophis ahaetulla) in aggressive pose with mouth open. Costa Rica.
Franco Banfi / Close view of a Green anaconda, (Eunectes murinus) underwater, Formoso River, Bonito, Mato Grosso do Sul, Brazil
Lucas Bustamante / Red tailed boa constrictor (Boa constrictor constrictor) juvenile, portrait, with tail wrapped round head, Cuayabeno, Sucumbios, Ecuador.