Fabrice Cahez / Roe Deer (Capreolus capreolus) jumping over barbed wire fence in snow. Vosges, France, January.

Charlie Summers / Rocky Mountain Bighorn sheep (Ovis canadensis) female jumping barbed wire fence, Montana, USA

Andy Sands / European Cuckoo (Cuculus canorus) female perched on fence post, Isle of Coll, Scotland, UK, June

Alastair MacEwen / Timelapse of frost forming on barbed wire, controlled conditions, Somerset, England, UK.

Ingo Arndt / Flying fox (Pteropus genus) caught on barbed wire fence, Queensland, Australia

Shattil & Rozinski / Dead Great horned owl (Bubo virginianus) caught on a barbed wire fence, Colorado, USA, September.

Nick Garbutt / Male Arabian Leopard (Panthera pardus nimr) seen through wire fencing at the Arabian Wildlife Centre & captive-breeding project, Sharjah, United Arab Emirates.

Nick Garbutt / Male Arabian Leopard (Panthera pardus nimr) seen through wire fencing at the Arabian Wildlife Centre & captive-breeding project, Sharjah, United Arab Emirates.

Fabrice Cahez / Wildcat (Felis silvestris) catching prey near barbed wire fence, Vosges, France, February

Benjamin Barthelemy / Barn swallow (Hirundo rustica) perched on a barbed wire fence, Lorraine, France, May.

Ernie Janes / Down Farm from the Ridgeway Long Distance Path at Ivinghoe Beacon, with Black bryony (Tamus communis) and Bramble (Rubus sp) growing round fence, both with berries. Buckinghamshire, UK, September

Andy Trowbridge / Yellow-eyed Penguin (Megadyptes antipodes) standing by a barbed wire stock fence. Katiki Point, Moeraki, Otago, South Island, New Zealand. January.