Laurie Campbell / Birch tree felled by European beaver {Castor fiber} at the Aigas Field Studies Centre, European Beaver demonstration project, Inverness-shire, Scotland, May 2008

Laurie Campbell / Loch Linne, Knapdale, freshwater habitat into which European Beavers (Castor fiber) were reintroduced in 2009, Argyll, Scotland, July 2009

Laurie Campbell / European Beaver (Castor fiber) lodge at the Aigas Field Studies Centre, Inverness-shire, Scotland, UK, May 2008

Laurie Campbell / Juvenile European beaver {Castor fiber} striping bark off a Birch trunk at the Aigas Field Studies Centre, European Beaver demonstration project, Inverness-shire, Scotland, August 2008

Laurie Campbell / Dam created by European beavers {Castor fiber} at the Aigas Field Studies Centre, European Beaver demonstration project, Inverness-shire, Scotland, May 2008

Laurie Campbell / European beaver {Castor fiber} feeding on Aspen at the Aigas Field Studies Centre, European Beaver demonstration project, Inverness-shire, Scotland, May 2008

Laurie Campbell / European beavers {Castor fiber} feeding on Aspen at the Aigas Field Studies Centre, European Beaver demonstration project, Inverness-shire, Scotland, May 2008

Laurie Campbell / European Beaver (Castor fiber) feeding on willow, captive, Holland, October

Laurie Campbell / Willow tree felled by reintroduced European Beaver (Castor fiber) by Loch Coille-Bharr, Knapdale, Argyll, Scotland, July 2009

Wild Wonders of Europe / Cairns / European beaver (Castor fiber) swimming in river, Bergslagen, Sweden, June 2009

Wild Wonders of Europe / Cairns / European beaver (Castor fiber) swimming in river, Bergslagen, Sweden, June 2009

Wild Wonders of Europe / Cairns / European beaver (Castor fiber) swimming in river, Bergslagen, Sweden, June 2009

Wild Wonders of Europe / Cairns / European beaver (Castor Fibor) lodge built by a main road, Bergslagen, Sweden, April 2009

Wild Wonders of Europe / Cairns / European beaver (Castor fiber) swimming in river, Bergslagen, Sweden, June 2009

Wild Wonders of Europe / Cairns / European beaver (Castor Fibor) lodge, Bergslagen, Sweden, April 2009

Roy Mangersnes / Eurasian Beaver (Castor fiber) swimming in lake, Sør-Trøndelag, Norway. June

Roy Mangersnes / Large Willow tree cut down by Eurasian Beaver (Castor fiber) in Rogaland, Norway. February

Nick Upton / Eurasian beaver (Castor fiber) dams across drainage channel, Narew marshes, Poland

Nick Upton / Tree felled by Eurasian beaver (Castor fiber) close to village, by Narew River, Poland

Roy Mangersnes / Eurasian beaver (Castor fiber) walking on path in forest, Norway. June

Roy Mangersnes / Tail of Eurasian beaver (Castor fiber) rushing though the forest, Norway. June

Roy Mangersnes / Eurasian beaver (Castor fiber) feeding at water edge, Norway. June

Roy Mangersnes / Tree felled by Eurasian beaver (Castor fiber) in Beech forest, Sweden. November

Roy Mangersnes / Eurasian beaver (Castor fiber) coming out of the forest with food, Norway. June

Roy Mangersnes / Eurasian beaver (Castor fiber) with food outside the lodge, Norway. June

Roy Mangersnes / Eurasian beaver (Castor fiber) swimming under a Pine tree in a lake in Norway. June

Hanne & Jens Eriksen / Eurasian beaver {Castor fiber} swimming in lake, Poland

Ingo Arndt / European Beaver (Castor fiber), Germany

Dietmar Nill / Eurasian beaver (Castor fiber) Mazury, Poland

Dietmar Nill / Wet Eurasian beaver (Castor fiber) portrait showing yellow teeth, Mazury, Poland

Dietmar Nill / Close up of Eurasian beaver (Castor fiber) tail, Mazury, Poland

Dietmar Nill / Eurasian beaver (Castor fiber) standing on hind legs, Mazury, Poland

Dietmar Nill / Eurasian beaver (Castor fiber) swimming in woodland stream, Mazury, Poland

Dietmar Nill / Eurasian beaver (Castor fiber) at waters edge, Mazury, Poland

Niall Benvie / Eurasian beaver {Castor fiber} swimming in calm waters, Talsu rajons, Latvia

Jose B. Ruiz / Castor oil plant (Ricinus communis) growing amongst rubble, Riotinto, Huelva, Spain

Bruno D'Amicis / European Beaver (Castor fiber) swimming, Brandenburg, Germany

Niall Benvie / People in a hide using binoculars to watch for Eurasian Beavers (Castor fiber) at a re-introduction site, Aigas, Scotland UK

Jean E. Roche / Eurasian beaver (Castor fiber) roadkill, Camargue, France

Niall Benvie / People watching from beaver-hide for beavers at reintroduction site, Aigas, Scotland UK, May 2006

Niall Benvie / Trunk of Silver Birch with damage from gnawing by Eurasian beaver (Castor fiber), beaver-watching hide in distance, beaver reintroduction site, Aigas, Scotland UK

Ingo Arndt / Sheep Tick (Ixodes ricinus) or Pasture Tick on leaf, Europe

Willem Kolvoort / Two Eurasian beavers (Castor fiber) swimming at lake surface, West Latvia

Martin Gabriel / Tree gnawed by Eurasian beaver {Castor fiber} Bavaria, Germany.

Niall Benvie / Eurasion beaver lodge {Castor fiber} Sor Trondelag, Songli, Norway.

Niall Benvie / European beaver {Castor fiber} newly released black morph juvenile, Latvia.

Dietmar Nill / Eurasion beaver home (holt) by side of river {Castor fiber}, notice damage to nearby trees

Niall Benvie / European beaver teeth marks on Alder {Castor fiber} Latvia

Dietmar Nill / Damage to tree trunk caused by Eurasian beaver {Castor fiber} Hungary

Willem Kolvoort / Stumps of trees felled by Eurasian beaver {Castor fiber} West Latvia

Niall Benvie / Eurasion Beaver dammed river and meadows {Castor fiber} Dundaga, Latvia

Dietmar Nill / Tree felled by European beaver {Castor fiber}, Lettland / Latvia.

Dietmar Nill / European beaver {Castor fiber} walking along a track, Mazuren, Poland.

Dietmar Nill / European beaver {Castor fiber} climbing over fallen tree trunk, Mazuren, Poland.

Dietmar Nill / European beaver {Castor fiber} walking along a track, Mazuren, Poland.

Dietmar Nill / European beaver {Castor fiber} dam, Lettland / Latvia.

Artur Tabor / Eurasian Beaver {Castor fiber} feeding on lodge, Mazovia, Poland.

Dietmar Nill / European beaver {Castor fiber} in water feeding on the bark from a tree stump, Mazuren, Poland.

Dietmar Nill / European beaver {Castor fiber} drinking from river bank, Mazuren, Poland.

Dietmar Nill / European Beaver wetland habitat, Mazuren, Poland.

Igor Shpilenok / Eurasian beaver {Castor fiber} sitting in snow, Russia.

Martin Gabriel / Eurasian beaver damage to willow tree {Castor fiber} River Danube, Bavaria, Germany

Niall Benvie / Eurasian beaver swimming at sunset {Castor fiber} Latvia

Niall Benvie / Eurasian beaver swimming {Castor fiber} Kurzeme Latvia

Niall Benvie / Eurasian beaver feeding on birch {Castor fiber} reintroduction Kent UK

Niall Benvie / Eurasian beaver swimming {Castor fiber} Norway

Niall Benvie / Eurasian beaver dam {Castor fiber} Latvia

Niall Benvie / Eurasian beaver portrait {Castor fiber} black morph

Niall Benvie / Eurasian beaver {Castor fiber} damage to Silver birch tree

Flip de Nooyer / European Beaver (Castor fiber) lodge, Europe

Flip de Nooyer / European Beaver (Castor fiber) nibbling vegetation in shallow water, Europe

Duncan Usher / European Beaver (Castor fiber) feeding on waterside vegetation, Europe

Duncan Usher / European Beaver (Castor fiber) feeding on waterside vegetation, Europe

Duncan Usher / European Beaver (Castor fiber) feeding on vegetation in shallow water, Europe

Jean E. Roche / Tree felled by Eurasian beaver {Castor fiber} Gardon gorges, Provence, France

Jose B. Ruiz / Fruit of Castor oil plant (Ricinus communis). Alicante, Spain, Europe

Jose B. Ruiz / Fruit of Castor oil plant {Ricinus communis} Alicante Spain

Jose B. Ruiz / Fruit of Castor oil plant {Ricinus communis} Alicante Spain

Jose B. Ruiz / Leaves of Castor oil plant (Ricinus communis). Alicante, Spain, Europe

Jose B. Ruiz / Leaves of Castor oil plant

Bengt Lundberg / Eurasian beaver {Castor fiber} Sweden 2002

Bengt Lundberg / Eurasian beaver with young feeding on apple {Castor fiber} Sweden

Nick Upton / Eurasian beaver {Castor fiber} lodge in reed beds near Lake Sniardwy, Masuria region, Poland, 2007

Konrad Wothe / Sheep Tick (Exudes ricinus) juvenile, Germany

Konrad Wothe / American Beaver (Castor canadensis) cuttings on tree, Ural Mountains, Pechora-Ilych Reserve, Komi, Russia

Bengt Lundberg / Eurasian beaver + 2-month-old young {Castor fiber} Sweden

Jose B. Ruiz / Castor oil plant {Ricinus communis} Spain

Bengt Lundberg / Eurasian beaver feeding on apple {Castor fiber} Sweden Aug-02

Bengt Lundberg / Eurasian beaver young feeding on apple {Castor fiber} Sweden Aug-02

Jose B. Ruiz / Castor oil plant {Ricinus communis} Spain

Bengt Lundberg / Eurasian beaver swimming {Castor fiber} Sweden august 200

Bengt Lundberg / Eurasian beaver {Castor fiber} Sweden august 2002

Bengt Lundberg / Eurasian beaver {Castor fiber} Sweden august 2002