![Eurasian beaver (Castor fiber) framed by willow leaves in early morning light, Somerset, UK.](/sites/default/files/styles/max_650x650/public/2023-02/Medium_WW1250429.jpg?itok=xq7YQzF3)
© Joshua Harris / WWF-UK
![Beavers (Castor fiber) Protected Area Morava Alluvium, Slovakia](/sites/default/files/styles/max_650x650/public/2023-02/Medium_WW229365.jpg?itok=UJFeTRBM)
© Tomas Hulik
![Signs of beaver activity within Norfolk Rivers Trust's beaver enclosure near Bodham, in Norfolk, UK. Beavers like to eat the soft inner bark of trees, so bark chippings, gnawed wood and even felled trees can all be signs of busy beavers.](/sites/default/files/styles/max_650x650/public/2023-03/Medium_WW1228386.jpg?itok=-gMSe09l)
© Greg Armfield / WWF-UK
![Beaver (Castor fiber) swimming.](/sites/default/files/styles/max_650x650/public/2023-02/Medium_WW1251372.jpg?itok=SHByhT-a)
© WWF-Sweden / Ola Jennersten
![Beaver (Castor) swimming through the small river. Germany.](/sites/default/files/styles/max_650x650/public/2023-02/Medium_WW2154159.jpg?itok=nD_6Fpq9)
© Alessandro Sgro / WWF
![Beaver felled aspen trees, along Dalälven.](/sites/default/files/styles/max_650x650/public/2023-03/Medium_WW1251350.jpg?itok=Dm5uqNIr)
© WWF-Sweden / Ola Jennersten
![Eurasian beaver (Castor fiber) in shadows, Somerset, UK.](/sites/default/files/styles/max_650x650/public/2023-03/Medium_WW1250427.jpg?itok=guGoZN3_)
© Joshua Harris / WWF-UK
![Beaver damming activity recorded within Norfolk Rivers Trust's beaver enclosure near Bodham, Norfolk, UK. Beavers feel safer from predators when they have deep water to swim in, so they build dams to control water levels. These dams consist of branches, sticks and twigs pushed up against the mud, creating separated pools of varying depths.](/sites/default/files/styles/max_650x650/public/2023-03/Medium_WW1228448.jpg?itok=9IdAaeFj)
© Greg Armfield / WWF-UK
![Beaver (Castor fibre) female feeding on willow bark with her two kits, River Otter, Devon, England, UK, July.](/sites/default/files/styles/max_650x650/public/2023-03/Medium_WW1256028%20%281%29.jpg?itok=BOuyPW0u)
© naturepl.com / Matthew Maran / WWF
![Eurasian beaver (Castor fiber) kit on dam, Cornwall, UK.](/sites/default/files/styles/max_650x650/public/2023-02/Medium_WW1250428.jpg?itok=EMYsC0BH)
© Joshua Harris / WWF-UK