A pig lying in the mud of the 'best mud pool' of the Netherlands, in Buren, on July 26, 2012. This particular mud pool was chosen by the Dutch animal welfare organization 'Wakker Dier' ('Awake Animal') because of the perfect size, dept and muddy-ness, a perfect place for a pig to cool off during warm summer days. (Photo by Koen Van Weel/AFP)
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