Sven Zacek / Grass Snake (Natrix natrix) looking out from between wood slats. Estonia, Europe, June.

Petra Wegner / Cavalier King Charles Spaniel, puppy, black-and-tan, coated aged 7 weeks, lying in wicker basket, and autumn foliage

Edwin Giesbers / European pond turtle (Emys orbicularis), swimming with head above water, Lesbos, Greece

Edwin Giesbers / Common tree frog {Hyla arborea} on vegetation, the Netherlands

Dave Bevan / Long eared owl (Asio otus) peering round trunk of larch tree, Wales, UK, captive

Donald M. Jones / Common Starling (Sturnus vulgaris) chick peeking out of nest cavity, western Montana

Ross Hoddinott / Common blue tailed damselfly {Enallagma cyathigerum} peering out from behind stem. Tamar lake, Cornwall/Devon, UK. August.

George Sanker / Black bear (Ursus americanus) cub, brown phase, looking out from behind tree trunk, Yellowstone National Park, Wyoming, USA, May

Peter Cairns / naturepl.com / Great grey owl {Strix nebulosa} peering from behind tree trunk in pine forest, captive, Scotland, UK, February

David Tipling / Harvest mouse (Micromys minutus) looking out of tennis ball being used as nest in a nature reserve, Norfolk, UK, June

Thomas Marent / Crowned Lemur (Eulemur coronatus) female, Ankarana Special Reserve, Madagascar

Suzi Eszterhas / Black-backed Jackal (Canis mesomelas) pup, four weeks old, peeking out of den, Masai Mara, Kenya