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...
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Yva Momatiuk & John Eastcott / Eastern Grey Kangaroo (Macropus giganteus) female grazing with joey in her pouch straining to sniff tall grass, Yuraygir National Park, New South Wales, Australia
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Kristel Richard / Two wild young Namib stallions sniff one another in the Namib Nakluft National Park, Namib Desert, Namibia, October 2009
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Jane Burton / British show pony mare giving birth, mare and foal sniff nostrils while waiting for the placenta to come away, UK, sequence 8/26
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Jane Burton / British show pony mare giving birth, mare and foal sniff nostrils while waiting for the placenta to come away, UK, sequence 9/26
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Jane Burton / Bay mare and filly, filly bending her knees in order to reach down and sniff the grass, UK
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Jane Burton / Albino Rat {Rattus sp} sitting up to sniff the air
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Jane Burton / Sable Border Collie dog pup, 14 weeks old, and Labrador x Golden Retriever pup, 16 weeks old, circling each other to sniff tails on first meeting
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Karl Ammann / African elephants sniffing broken tusk {Loxodonta africana} Kenya
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Karl Ammann / African elephants sniffing broken tusk {Loxodonta africana} Kenya
