Bert Willaert / Natterjack toad (Epidalea calamita / Bufo calamita) next to an empty bullet cartridge on military land, Belgium, June.

Bert Willaert / Amplectant pair of Natterjack Toads (Epidalea / Bufo calamita) with reflection in water. Belgium, Europe, July.

Solvin Zankl / Natterjack Toad (Epidalea / Bufo calamita) Germany

Rolf Nussbaumer / Natterjack toad male calling {Bufo calamita} Switzerland.

Jose B. Ruiz / Natterjack toad singing at night, Spain

Bert Willaert / Natterjack Toad (Epidalea / Bufo calamita) in its environment. Belgium, March.

Roger Powell / Coloured and marked variation of the Natterjack Toad (Bufo calamita). Iberia Alcantara, Extremadura, Spain, May.

Pete Oxford / Natterjack toad (Epidalea / Bufo calamita) Natural Monument of Los Barruecos, Extremadura, Spain

Stephen Dalton / Natterjack toad (Bufo calamita) portrait, UK, controlled conditions

Stephen Dalton / Natterjack toad {Bufo calamita} portrait, controlled conditions, from Europe

Bernard Castelein / Natterjack toad (Bufo calamita), Texel, the Netherlands

Wild Wonders of Europe / Oxford / Natterjack toad (Bufo calamita) Sierra de Andújar Natural Park, Mediterranean woodland of Sierra Morena, north east Jaén Province, Andalusia, Spain, April 2009

Wild Wonders of Europe / Oxford / Natterjack toad (Bufo calamita) near flowers, Sierra de Andújar Natural Park, Mediterranean woodland of Sierra Morena, north east Jaén Province, Andalusia, Spain, April 2009

Paul Hobson / Natterjack Toad (Bufo calamita) on land, uk

Paul Hobson / Natterjack Toad (Bufo calamita) on land, uk

Paul Hobson / Natterjack Toad (Bufo calamita) on land, Lincolnshire, uk

Paul Hobson / Natterjack Toad (Bufo calamita) on land, uk

Paul Hobson / Natterjack Toad (Bufo calamita) breeding boxes in pond, Lincolnshire, uk

Paul Hobson / Natterjack Toad (Bufo calamita) swimming in pond, Lincolnshire, uk

Paul Hobson / Natterjack Toad (Bufo calamita) on land, Lincolnshire, uk

Paul Hobson / Natterjack Toad (Bufo calamita) on land, Lincolnshire, uk

Paul Hobson / Natterjack Toad (Bufo calamita) swimming in pond, Lincolnshire, uk

John Cancalosi / Natterjack toad {Bufo calamita} UK, protected species

Juan Manuel Borrero / Natterjack toads {Bufo calamita} preparing to mate, Spain

Jason Smalley / Wet dune slack in fixed dunes, breeding ground for Natterjack toad (Bufo calamita), Ainsdale, Merseyside UK

Jason Smalley / Wet slack created for breeding Natterjack Toads {Bufo calamita} Formby SSSI, Merseyside.

Jason Smalley / Wet slack created for breeding Natterjack Toads {Bufo calamita} Formby SSSI, Merseyside.

Jason Smalley / Wet slack created for breeding Natterjack Toads {Bufo calamita} Formby SSSI, Merseyside.

John Cancalosi / Natterjack toads mating {Bufo calamita} UK, captive

Jim Hallett / Juvenile Natterjack toad leaving overnight burrow {Bufo calamita} Hampshire UK

Jose B. Ruiz / Natterjack toad calling, Spain.

Jim Hallett / Natterjack toad {Bufo calamita} Hampshire, England

Hans Christoph Kappel / Natterjack toad, France

John Cancalosi / Natterjack toads mating {Bufo calamita} UK, captive

John Cancalosi / Natterjack toad {Bufo calamita} by dandelion, UK

Niall Benvie / Natterjack toad in human footprint on sand {Bufo calamita} Holland. C

Chris Packham / Natterjack toad (Bufo calamita) England

George McCarthy / Natterjack toad near sand burrow {Bufo calamita} UK

George McCarthy / Natterjack toad in sand burrow {Bufo calamita} UK

George McCarthy / Natterjack toad in sand burrow {Bufo calamita} UK

George McCarthy / Natterjack toads mating {Bufo calamita} UK

Jim Hallett / Natterjack toad juvenile{Bufo calamita} Hampshire, UK

Jim Hallett / Natterjack toad coming out of burrow {Bufo calmita} Hampshire, UK

John Cancalosi / Natterjack toad {Bufo calamita} head close-up, UK

John Cancalosi / Natterjack toads mating {Bufo calamita} UK, captive

Chris Shields / Illustration of life around dune slack: Natterjack toad (Epidalea calamita,formerly Bufo calamita),with butterfly, flower and bird flying.

Premaphotos / Natterjack toad (Bufo calamita) UK