Jane Burton / Sable Border Collie puppy, 9 weeks, looking over his shoulder.

David Pike / German short-haired pointer looking over shoulder in coniferous forest. Winsford, Somerset, England, UK.

Cyril Ruoso / Roe deer (Capreolus capreolus) female standing in frost, looking over shoulder. Yonne, Bourgogne-Franche-Comte, France. February.

Markus Varesvuo / Black woodpecker (Dryocopus martius) perched on tree stump, looking over shoulder. Helsinki, Finland. February.

Paul Hobson / Red fox (Vulpes vulpes) cub looking over shoulder at camera. Sheffield, England, UK. May.

Christophe Courteau / Mountain gorilla (Gorilla gorilla beringei), two males, silverback fighting a blackback. Volcanoes National Park. Rwanda.

Andy Sands / Red-legged partridge (Alectoris rufa) Looking back over shoulder, Hertfordshire, England, UK, May

Mark Taylor / Wire haired Dachshund looking over shoulder.

Loic Poidevin / Northern goshawk (Accipiter gentilis) looking over shoulder, Spain, February.

Andy Trowbridge / Female Alpine ibex (Capra ibex) looking back over shoulder. Bernese Alps, Switzerland. August.

SCOTLAND: The Big Picture / Whimbrel (Numenius phaeopus) looking over shoulder, St John's Pool Bird Reserve, Thurso, Caithness, Scotland, UK, May.

Thomas Marent / Drill (Mandrillus leucophaeus) male, Afi Mountain Wildlife Sanctuary, Nigeria