Ole Jorgen Liodden / Polar bear (Ursus maritimus) waving standing on hind legs with paws raised, Svalbard, Norway, September.

Andy Rouse / Bengal tiger (Panthera tigris tigris) 11 month cubs play fighting, Ranthambhore National Park, India.

Andy Rouse / Red squirrel (Sciurus vulgaris) reaching upwards, UK. Captive.

Andy Trowbridge / Arctic Fox (Alopex / Vulpes lagopus) standing on ridge, mist/fog in the background. Dovrefjell National Park, Norway, September.

George Sanker / Black bear (ursus americanus) cub standing on hind legs, Yellowstone National Park, USA, June

Steven Kazlowski / Polar bear (Ursus maritimus) curious cub sits up on its hind legs, paw raised, and tries to balance itself, along Bernard Spit in autumn, 1002 area of the Arctic National Wildlife Refuge, Alaska, US...

Mark Taylor / Tabby kitten, 5 months, standing up with raised paws.

Andy Sands / European water shrew (Neomys fodiens) sniffing the air with front legs raised, captive, UK.

Wild Wonders of Europe / Varesvuo / Griffon vulture (Gyps fulvus) walking, foot raised, Extremadura, Spain, April 2009

Mark Taylor / Silver tabby kitten with paws raised

Nick Upton / Goldenrod crab spider (Misumena vatia) female on Field scabious (Knautia arvensis) waiting for prey to land, legs raised, Wiltshire, England, UK. July.

Alex Hyde / Lubber grasshopper (Chromacris sp.) with spiny legs raised in defensive pose and bearing aposematic markings to warn of its toxicity. Cloud forest understory vegetation, 1600 metres altitude, Manu Bio...