Bence Mate / Leafcutter ants (Atta sp) colony harvesting a banana leaf, Costa Rica. 3rd place in the Insects and Spiders category of the Terre Sauvage Nature Images Awards competitions 2015.

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

Nick Upton / Eurasian beaver (Castor fiber) gnawing the trunk of a Willow tree (Salix sp.) in woodland enclosure at night. Devon Beaver Project, run by Devon Wildlife Trust, Devon, UK, April. Taken by a remote cam...

Sven Zacek / Trees that have been gnawed by Beavers (Castor fiber) Southern Estonia, October.

David Woodfall / Alder Tree (Alnus glutinosa ) eaten at its base by Beaver (Castor fiber) Bevis Trust, Carmarthenshire, Wales, UK, June.

David Woodfall / Alder Tree (Alnus glutinosa ) eaten at its base by Beaver (Castor fiber) Bevis Trust, Carmarthenshire, Wales, UK, June.

David Woodfall / Alder Tree (Alnus glutinosa ) eaten at its base by Beaver (Castor fiber) Bevis Trust, Carmarthenshire, Wales, UK, June.

David Woodfall / Alder Tree (Alnus glutinosa ) eaten at its base by Beaver (Castor fiber) Bevis Trust, Carmarthenshire, Wales, UK, June.

Matthew Maran / Oak tree (Quercus robur) with Grey squirrel (Sciurus carolinensis) damage, Devon, England, UK, July.

Matthew Maran / Goat willow (Salix caprea) felled by a Eurasian beaver (Castor fiber) with teeth marks The riverside tree will resprout with new shoots supplying a source of food for the beavers for years to come. De...

Matthew Maran / Goat willow (Salix caprea) felled by a Eurasian beaver (Castor fiber). The riverside tree will resprout with new shoots supplying a source of food for the beavers for years to come. Devon, England, UK...

Chris Gomersall / Close-up of breaching Short-beaked common dolphin (Delphinus delphis), showing tooth marks inflicted by other dolphins - probably during courtship. Hebrides, Scotland. July .