The week in wildlife – in pictures

Week in Wildlife: A Javan rhino inside the Nam Cat Tien park in Southern Vietnam

A critically endangered species of rhino has been poached to extinction in Vietnam. The country's last Javan rhino was found dead with its horn hacked off Photograph: WWF/AFP/Getty Images

Week in Wildlife: Mansuar Island, Indonesia: Starfish on a bed of sea grass

Starfish on a bed of sea grass. Called the last paradise on earth, Raja Ampat acrhipelago was nominated as World Heritage Site of Unesco with its largely pristine environment considered as one of the most important marine biodiversities in the world Photograph: Romeo Gacad/AFP/Getty Images

Week in Wildlife: Soegel, Germany: A poisonous fly trap mushroom in a park

A poisonous fly trap mushroom in a park in Soegel, Germany Photograph: Ingo Wagner/EPA

Week in Wildlife: London, UK: A squirrel runs across the pitch

A squirrel runs across the pitch prior to the NFL International Series match between Chicago Bears and Tampa Bay Buccaneers at Wembley stadium in London Photograph: Warren Little/Getty Images

Week in Wildlife: Westonbirt, UK: Visitors walk through Westonbirt Arboretum in the Cotswolds

Visitors walk through Westonbirt Arboretum in the Cotswolds. The National Arboretum experiences one of its busiest times during the Autumn months as visitors flock to see the variety of colours displayed in the arboretum's tree collection Photograph: Dan Istitene/Getty Images

Week in Wildlife: A shark tagging expedition off Key Largo

A shark tagging expedition off Key Largo with Neil Hammerschlag, director of University of Miami's RJ Dunlap Marine Conservation Programme. Researchers and SEJ members attached an ID tag, a satellite tag, took a muscle biopsy, blood sample, fin clip, and measured a 6ft male bull shark that researchers named Ben Photograph: Sharon Guynup

Week in Wildlife: Vultures in the wild feeding on a dead buffalo

Vultures in the wild feeding on a dead buffalo. Nepal's vultures, decimated by medicine fed to livestock, are making a comeback Photograph: Bird Conservation Nepal/AFP/Getty Images

Week in Wildlife: A photograph taken from a live webcam showing a polar bear

A photograph taken from a live webcam showing a polar bear in the remote wilds of the Canadian tundra streamed live to computers around the world through a new programme that aims to document in real time the annual migration of hundreds of polar bears outside Churchill in Manitoba, Canada Photograph: Explore.com/AP

Week in Wildlife: Khumjung village, Nepal: Sherpa people lead their yak train

Sherpa people lead their yak train as the last light of the setting sun hits Mount Ama Dablam, Khumjung village, Nepal Photograph: Kevin Frayer/AP

Week in Wildlife: A group of around forty California sea otters

A group of California sea otters off the coast of Moss Landing. The mammals rest by floating on their backs but find they slowly drift into shore, whereupon they wake up and paddle back out to repeat the process Photograph: Michael Yang/Rex Features

Week in Wildlife: Bartlett, US: Pelicans come in for a landing

Pelicans come in for a landing as they make a temporary home in the flooded fields on Bartlett, Illinois Photograph: Mark Davis/AP

Week in Wildlife: Stratford-upon-Avon, UK: A gull swoops for bread thrown by tourists

A gull swoops for bread thrown by tourists in Stratford-upon-Avon, UK Photograph: Darren Staples/Reuters

Week in Wildlife: Kincraig, UK: A red deer stag shakes water off its fur

A red deer stag shakes water off its fur during the rutting season at the Highland Wildlife Park, Kincraig, Scotland Photograph: Russell Cheyne/Reuters

Week in Wildlife: The common pipistrelle bat

The common pipistrelle bat. An annual survey by British Waterways found that bats are doing well on the UK's canals and rivers, with 9% more being spotted in 2011 than 2010 Photograph: Bat Conservation Trust/PA