Dog

A rag picker sorts through garbage, picking out recycable materials to sell, as birds hover and a dog sleeps at the Ghazipur landfill site in the east of New Delhi, India, on Friday, May 30, 2014. New Delhi, whose population will reach almost 21 million by 2015, generates 8,000 tons of garbage a day. Trash is not separated between organic and inorganic materials -- everything from leftover food to batteries and beverage cans goes into Indian bins -- hurting efficiency and raising toxic emissions.

Udit Kulshrestha/Bloomberg

A rag picker sorts through garbage, picking out recyclable materials to sell at the Ghazipur landfill site in the east of New Delhi, India, on Friday

***BESTPIX*** Severe Flood Warnings In Place For The UK...CHERTSEY, UNITED KINGDOM - JANUARY 08:  Christine Baker wades through flood water, pulling her dog Archie in a boat, at the Abbey Fields caravan park after the River Thames flooded on January 8, 2014 in Chersey, England. Parts of the United Kingdon are entering a third week of flooding and stormy conditions.

Peter Macdiarmid/Getty

Christine Baker wades through flood water, pulling her dog Archie in a boat, at the Abbey Fields caravan park after the river Thames flooded on Wednesday in Chertsey, England. Parts of the UK are entering a third week of flooding and stormy conditionsRead more

Labour Annual Conference ...Delegates walk past an anti-nuclear campaigner and his dog as they arrive for the second day of the Labour Party Annual Conference in Brighton. PRESS ASSOCIATION Photo. Picture date: Monday September 23, 2013. See PA LABOUR stories.

Chris Iso/PA

Delegates walk past an anti-nuclear campaigner and his dog as they arrive for the second day of the Labour party annual conference in Brighton Read more

Autumn weather - September 18th...A woman walks her dog at sunrise on Blyth beach, Northumberland. PRESS ASSOCIATION Photo. Picture date: Wednesday September 18, 2013. Photo credit should read: Owen Humphreys/PA Wire

Owen Humphreys/PA

Autumn weather in Northumberland, UK: a woman walks her dog at sunrise on Blyth beach early on Wednesday Read more

Dog playground in Rotterdam...epa03811039 A dog runs through a tunnel as it enjoys a 'Dog Day' in the first dog playground in Rotterdam, The Netherlands, 02 August 2013. It was expected that this 02 August 2013 would become a real 'Dog Day' as the (so far) hottest day of the year in the Netherlands.  EPA/BAS CZERWINSKI

Bas Czerwinski/EPA

A dog runs through a tunnel at Dog Day, the first playground for dogs in Rotterdam, on Friday, the hottest day of the year so far in the Netherlands

Dan McManus and his service dog Shadow hang glide together outside Salt Lake City, Utah...Dan McManus and his service dog Shadow hang glide together outside Salt Lake City, Utah, July 22, 2013. McManus suffers from anxiety and Shadow's presence and companionship help him to manage the symptoms. The two have been flying together for about nine years with a speciality made harness for Shadow. REUTERS/Jim Urquhart  (UNITED STATES - Tags: SOCIETY ANIMALS)

Jim Urquhart /Reuters

Dan McManus and his service dog Shadow hang glide together outside Salt Lake City, Utah, on Monday. Mr McManus suffers from anxiety and Shadow’s presence and companionship help him to manage the symptoms. The two have been flying together for about nine years with a specially made harness for Shadow. Read more

A man rides a bicycle as he carries his dog on his shoulders in Mumbai...A man rides a bicycle as he carries his dog on his shoulders in Mumbai July 9, 2013. REUTERS/Danish Siddiqui (INDIA - Tags: SOCIETY ANIMALS)

Danish Siddiqui/Reuters

A dog holds on tightly as his owner rides a bicycle in Mumbai, India, on Tuesday Read more

Miller, a Transit Police dog with the Massachusetts Transportation Authority Explosives Detection Unit, watches as commuters enter the subway system at Back Bay Station a day after two explosions near the finish line of the Boston Marathon in Boston, Massachusetts April 16, 2013. Two bombs packed with ball bearings tore through crowds near the finish line of the Boston Marathon on Monday, killing three people and triggering  a massive hunt for those behind an attack the White House said would be treated as "an act of terror."

Jessica Rinaldi/Reuters

Miller, a Transit Police dog, watches commuters at Back Bay Station a day after two explosions in Boston. Miller, a Transit Police dog with the Massachusetts Transportation Authority Explosives Detection Unit, watches as commuters enter the subway system at Back Bay Station a day after two explosions near the finish line of the Boston Marathon in Boston, Massachusetts April 16, 2013. Read more