World weather photos: The Dog Days of Winter

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Deep Freeze Canada Sundog
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Deep Freeze Canada Sundog
As the sun rises on a extremely cold day, Sundogs (scientific name parhelion - plural parhelia) appear around the morning sun near Kitchener, Ontario, on Tuesday, Jan. 7, 2014. Sundogs are commonly made by the refraction of light off ice crystals. (AP Photo/The Canadian Press, Dave Chidley)