Juan Carlos Munoz / Gemsbok (Oryx gazella) aerial view of herd on sand, Namib Desert, Namibia.
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Sebastian Kennerknecht / Mountain Lion (Puma concolor) biologist, Paul Houghtaling, using telemetry to track mother and cubs near houses, Santa Cruz Puma Project, Santa Cruz, Monterey Bay, California
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Adrian Davies / Cicada turret, or chimney, formed by underground larva. Sabah, Borneo.
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Colin Monteath/ Hedgehog House / Spinifex Grass (Spinifex sp) on sand dune with footprints, Simpson Desert, Northern Territory, Australia
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Anup Shah / Eastern chimpanzee (Pan troglodytes schweinfurtheii) male 'Faustino' aged 22 years walking along a track preparing to display. Gombe National Park, Tanzania.
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Bruno D'Amicis / Desert monitor (Varanus griseus) moving across sand dunes, showing characteristic tracks, in the Sahara, Tunisia.
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Bruno D'Amicis / Tenebrionid beetle (Tenebrionidae) crossing Fennec fox (Vulpes zerda) tracks on sand. Grand Erg Oriental, Kebili Governorate. Tunisia.
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Juan Carlos Munoz / Tourists hiking along dirt track, Triglav National Park, Julian Alps, Slovenia, October 2010.
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Andy Rouse / Bengal tiger (Panthera tigris tigris) with tourists watching from cars, Ranthambore, India
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Ole Jorgen Liodden / Herd of Moose (Alces alces) following in line in each other's tracks, aerial view, Valdres, Norway, February.
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Ole Jorgen Liodden / Polar bear (Ursus maritimus) footprints in snow, on cracked ice, Svalbard, Norway, September.
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Terry Whittaker / Red fox (Vulpes vulpes) cub on railway embankment with train passing behind, Kent, UK, July.
