Jordi Chias / Gentoo penguin (Pygoscelis papua) feeding chick, Antarctic Peninsula, Antarctica.

Jordi Chias / Leopard seal (Hydrurga leptonyx) predating a Gentoo penguin (Pygoscelis papua) Antarctic Peninsula, Antarctica.

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) mother nursing calf, Newfoundland, Canada

Lucas Bustamante / Giant river otter (Pteronura brasiliensis) eating a catfish. Yasuni National Park, Orellana, Ecuador

Nick Upton / Juvenile Goldenrod spider (Misumena vatia) camouflaged on a Common hogweed (Heracleum sphondylium) flowerhead, reacting to and catching a fly (Muscidae), Wiltshire, England, UK, June.

Nick Upton / Marbled white butterflies (Melanargia galathea) nectaring on a clump of Greater knapweed flowers (Centaurea scabiosa) in a chalk grassland meadow, Wiltshire, England, UK, June.

Nick Upton / Forest caterpillar hunter (Calosoma sycophanta) feeding on a Gypsy moth caterpillar (Lymantria dispar) it has killed in a Holm oak tree, Bacu Goloritze ravine, Baunei, Sardinia, Italy, May.

Suzi Eszterhas / Leopard (Panthera pardus) six-week-old cub nursing, Jao Reserve, Botswana

John Chan / Peregrine falcon (Falco peregrinus) plucking Dowitcher (Limnodromus) prey, Southern California, USA.

John Chan / Killdeer (Charadrius vociferus) stamping its feet to create vibrations in the sand as it forages for insects, Southern California, USA, August.

David Woodfall / Little tern (Sterna albifrons ) feeding sand eel (Hyperoplus spp) to young chick. Gronant Dunes, Denbighshire, Wales, UK, June.

John Shaw / Osprey (Pandion haliaetus) with Atlantic needlefish (Strongylura marina) it has caught. Blue Cypress Lake, Florida, USA, April.