Dogs have been faithful companions to Occupy Wall Street protesters. Greg Hillman (l.) and his dog Chaos take part in the Occupy DC camp in McPherson Square in Washington on Oct. 30. The Occupy Wall Street movement protesting the excesses of capitalism has surged from a ragged group in downtown Manhattan to protesters of all ages demonstrating worldwide.
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A demonstrator sits with his dog as authorities begin to remove all camping materials outside the Federal Reserve Bank in San Francisco, Calif., on Oct. 6.
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A participant who asked not to identified and a dog begin the day along with others at the Occupy Wall Street protests at Zuccotti Park in New York on Oct. 17.
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Juan Carlo/The Ventura County Star/AP/File
Jeff Vaughn and his dog Peanut attend an Occupy Wall Street protest at Mission Park in Ventura, Calif., on Oct. 15.
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Chris Young/The Canadian Press/AP/File
Kiera Chan carries her dog to a protest in Toronto's financial district on Oct. 15. The demonstration was one of many being held across the country in support of the ongoing Occupy Wall Street demonstration in New York. She holds a sign that reads, "99% against (corporate) fat cats."
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A dog lies in front of one of the tents of anti-capitalist demonstrators camped outside St. Paul's Cathedral in London on Oct. 25 in a protest inspired by the Occupy Wall Street movement.
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An unidentified couple and their dog huddle under an umbrella with dozens of other protesters in Westlake Park as part of Occupy Seattle on Oct. 10.
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A man named Simeon who came to visit the Occupy London Stock Exchange camp holds the lead of a crossbred husky dog called Aisha that he is looking after outside St. Paul's Cathedral in London on Oct. 27.
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A man walks a dog through the tent city that has been setup as part of a demonstration in support of Occupy Wall Street at Lincoln Park across from the Capitol in Denver, Colo., on Oct. 13.
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A police officer and dog guard stand behind barricades after police arrested people sleeping in an expansion of the Occupy Boston tent village on the Rose Kennedy Greenway in Boston in the early morning hours of Oct. 11.