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Eco-photos of the week: Aug. 1-7

Tiger peers through a fence

Photo: ZUMA Press

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Big cat dilemma

A Siberian tiger peers outside its enclosure on Aug. 3 at Germany's Leipzig Zoo.

With the celebration of World Cat Day on Aug. 8, the World Wildlife Fund for Nature (WWF) and the Leipzig Zoo are calling attention to the situation of tigers, lions and other big cats.

According to the WWF, cats are among the most endangered species, and Siberian tigers, Amur leopards and Asiatic lions are threatened with extinction.