David Woodfall / European beaver (Castor fiber) rear view in wetlands, in captive breeding programme .Bevis Trust, Carmarthenshire, Wales, UK, May.

David Woodfall / European Beaver (Castor fiber) amongst Pondweed (Potomogeton natans) in freshwater lake Bevis Trust, Carmarthenshire, Wales, UK, June.

Remi Masson / European beaver (Castor fiber) eating branches in the water before approaching the camera, River Rhone, Rhone-Alpes, France, June.

Remi Masson / European beaver (Castor fiber) swimming underwater and urinating, River Rhone, Rhone-Alpes, France, June.

Laurent Geslin / European beaver (Castor fiber) at river bank in urban environment at night, Grenoble, France, August.

Ingo Arndt / European Beaver (Castor fiber) swimming, France

Ingo Arndt / European Beaver (Castor fiber) parent with newborn young inside lodge, Germany

Ingo Arndt / European Beaver (Castor fiber) fresh bite marks and felled trees, Spessart, Germany

Ingo Arndt / European Beaver (Castor fiber) fur, Germany

Ingo Arndt / European Beaver (Castor fiber) grooming newborn baby inside lodge, Germany

Ingo Arndt / European Beaver (Castor fiber) with two newborn babies inside lodge, Germany

Ingo Arndt / European Beaver (Castor fiber) playing with two newborn babies inside lodge, Germany