Denis-Huot,Denis-Huot / Lion (Panthera leo) male using 'flehmen response' to smell, Masai-Mara Game Reserve, Kenya. Vulnerable species.

Jeff Rotman / Whitetip reef sharks (Triaenodon obesus) pack silhouetted following scent trail in water column, Cocos Island, Costa Rica, Pacific Ocean

Vladimir Medvedev / Camera trap image of wild female Siberian tiger (Panthera tigris altaica) scent marking the trunk of a Cedar (Cedrus) tree, Lazovsky Zapovednik Nature Reserve, Primorsky Krai, Far East Russia, April...

LYNN M. STONE / Beagle hound in wild purple Violets, Arcadia, Wisconsin, USA

Klaus Echle / Red Fox (Vulpes vulpes) with wet fur in warm light. Black Forest, Germany, November.

Mark Hamblin / 2020VISION / Wood anemones (Anemone nemorosa) growing in profusion on woodland floor, Scotland, UK, May 2010. Photographer quote: 'Driving home for the dentist I saw the most amazing display of wood anemones. It w...

Andy Rouse / 2020VISION / Wild Boar (Sus scrofa) female smelling air for scent of human, Forest of Dean, Gloucestershire, UK, March

Andy Rouse / 2020VISION / Wild boar (Sus scrofa) female in woodland undergrowth smelling air for scent of human, Forest of Dean, Gloucestershire, UK, March. Photographer quote: 'I am not sure if it was my lack of smelly shower...

Andy Rouse / 2020VISION / Wild boar (Sus scrofa) female in woodland undergrowth sniffing air for scent of human, Forest of Dean, Gloucestershire, UK, March, Highly commended, Animal Portraits, British Wildlife Photography Awar...

Edwin Giesbers / European Otter (Lutra lutra) walking across snow while sniffing the ground. The Netherlands, December. Captive.

Mark Raycroft / Basset Hound (Canis familiaris) puppy

Andrew Parkinson / Sika deer (Cervus nippon) female stretching her head back to detect the scent of any potential threat. Arne RSPB Reserve, Dorset, UK, October (non-ex)