The week in wildlife

Pitlochry, UK: Highland cattle stand in a snow-covered field Photograph: Russell Cheyne/Reuters

Srinagar, India: Willow trees on a cold and foggy morning Photograph: Dar Yasin/AP

Russia: A dog stands on the frozen bank of the Yenisei river Photograph: Ilya Naymushin/Reuters

Kuhhorst, Germany: Geese at a farm Photograph: Hannibal Hanschke/Reuters

Harbin, China: A white tiger cleans its paw at a Siberian tiger park. The park is one of the largest artificial raising and breeding bases for Siberian tigers Photograph: Diego Azubel/EPA

Ripon, UK: Deer in the snow at Studley Royal park in North Yorkshire Photograph: Nigel Roddis/Reuters

Berlin, Berlin: Knut is surrounded by snowflakes falling on his enclosure at the zoo. Just before his second birthday it was announced that Knut will have to leave the city as the zoo cannot afford the cost of a larger enclosure Photograph: Michael Gottschalk/AFP/Getty Images

Qinling, China: Two giant panda cubs, that were born from artificial insemination at the Qinling Panda research centre, take a nap Photograph: AFP/Getty Images

Minsk, Belarus: A squirrel sits on the ground in a park Photograph: Sergei Grits/AP

Hanau, Germany: A little bird picks a berry from a snow covered tree Photograph: Kai Pfaffenbach/Reuters

Karachi, Pakistan: Seized falcons at a governmen wildlife office. Security forces, in collaboration with wildlife authorities, recovered around 41 falcons from three people who had illegally smuggled the birds from Afghanistan Photograph: Rehan Khan/EPA

Melbourne, Australia: A keeper feeds herring to a king penguin in its new enclosure at the Melbourne Aquarium Photograph: t/Reuters

Gold Coast, Australia: Baby flying foxes hang from a clothes line at a temporary bat rehabilitation centre Photograph: David Hardenberg/Getty Images

An invasive garden ant (Lasius neglectus), which was discovered less than 20 years ago could be on the way to wreak havoc in parks and gardens of Northern Europe including Britain Photograph: Gert Brovad/Zoological Museum Co/PA

Democratic Republic of the Congo: An infant gorilla looks for foliage to eat on a tree on the slopes of Mount Mikeno in the Virunga National Park Photograph: Roberto Schmidt/AFP/Getty Images

Paraguay, Uruguay: A crab-eating racoon stands in the banks of the Calzada de Amador bay Photograph: Elmer Martinez/AFP/Getty Images